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Awesome Free for Developers

A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

Here you can see meta information about this topic like the time we last updated this page, the original creator of the awesome list and a link to the original GitHub repository.

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Major Cloud Providers

TEMPORARILY FREE] - Access Cloud Services and G-Suite either on a trial of 14 days or register for one year through educational license or by card details.

Unlimited private repos (Git and TFS) for up to 5 users/team

10 free parallel jobs with unlimited minutes for open source for Linux, macOS, and Windows

Cloud management solutions

Terraform works with many cloud providers and creates infrastructure from code.

Source Code Repos

Unlimited public and private Fossil repositories

Unlimited public and private Git repos

Unlimited public and private Git repos

Repo and tools to develop applications with Ionic, also you have an ionic repo

NotABug.org is a free-software code collaboration platform for freely licensed projects, Git-based

Free 1GB Cloud and Git, Mercurial, or SVN repositories.

Unlimited free and open source distributed version control system. Its distinctive feature is to be based on a sound theory of patches, which makes it easy to learn and use, and really distributed. Solves many problems of git/hg/svn/darcs.

Free for individuals, OSS and nonprofit organizations

One free private project (Git and Subversion) with 50 MB space

Serves as a collaborative software development management system for free Software projects (for GNU Projects)

Serves as a collaborative software development management system for free Software projects (for non-GNU projects)

APIs, Data and ML

Host algorithms for free. Includes free monthly allowance for running algorithms. Now with CLI support

Web scraping and automation platform that lets you create an API extracting websites data. Free tier with 10k monthly crawls and 7 days data retention.

Mock a rest API in seconds, fake API response and much more. Free 50 requests per day, public dashboard, open endpoints (anyone having link to the dashboard can view requests and responses).

Hosted machine learning algorithms. Unlimited free tasks for development, limit of 16 MB data/task

Enterprise-grade Public holiday API service for over 200 countries. Free plan includes 1000 calls per month.

Image API for custom face recognition and detection. Able to train AI models. Free plan has 5000 calls per month.

Free web-based Python notebook environment with Nvidia Tesla K80 GPU.

Realtime currency data API for fintech apps. Free plan includes 5000 calls per month.

API for building interactive reports in Python and deploying Python scripts and Jupyter Notebooks as self-service tools.

Cloud based Database schema design and modeling tool with a free starter plan of 2 Database models and 10 tables per model.

Cloud based web scraping and data extraction platform for turning any website to the dataset or to work with it as with an API. Free plan includes 5K page requests monthly.

Data science with support for Python, R, Spark, Hadoop, MATLAB and others

Open source REST API backend for mobile, web, and IoT applications. Hook up any SQL/NoSQL database, file storage system, or external service and it instantly creates a comprehensive REST API platform with live documentation, user management,...

Make HTTP requests with a simple web-based HTTP client.

Screen an order transaction for credit card payment fraud. This REST API will detect all possible fraud traits based on the input parameters of an order. Free Micro plan has 500 transactions per month.

Completely free Geo IP information (JSON, CSV, XML). No registration required, 15000 queries per hour rate limit.

Location search service lookup for city name by using latitude and longitude coordinate. Free API queries up to 500 times per month.

A free, fast, and beautiful API request builder.

Access over 70 (cloud)platforms such as Exact Online, Twinfield, ActiveCampaign or Visma using Invantive SQL or OData4 (typically Power BI or Power Query). Includes data replication and exchange. Free plan for developers and implementation consultants. Free for specific platforms with limitations in data volumes.

DISCOUNT] - Free for 50K requests and 50% discount on all paid plans for students.

Freemium IP geolocation service. LITE database is available for free download. Import the database in server and perform local query to determine city, coordinates and ISP information.

Fast, accurate, and free (up to 100k/month) IP address data API. Offers APIs with details on geolocation, companies, carriers, IP ranges, domains, abuse contacts, and more. All paid APIs can be trialed for free.

Lookup details about any IP address, such as Geo IP information, tor addresses, hostnames and ASN details. Free for personal and business users.

Provides fast, accurate and free (Unlimited or up to 10K-50K/month) APIs for modern web like IP Geolocation, Reverse Geocoding, Networking Insights, Email and Phone Validation, Client Info and more.

An embarrassingly simple API that provides reliable and useful IP geolocation data for your business.

API Marketplace and powerful tools for private and public APIs. With the free tier, some features are limited such as monitoring, alerting and support

Email verification service using real mail server connection to confirm valid email. Free API plan has 300 verifications per month.

It turns any website into data such as metatags normalization, beauty link previews, scraping capabilities or screenshots as a service. 100 reqs/day every day free.

Text mining made easy. Extract and classify data from text.

Create fake REST API for developers with possibility to generate code and app in docker container.

Experiment tracking tool bringing organization and collaboration to data science projects.

An OCR API which parses image and pdf files returning the text results in JSON format. 25,000 requests per month free.

Extract data from dynamic sites, turn dynamic websites into APIs, 5 projects free

Free daystream database service. All operations are performed by API. Visualization with heat maps and line graphs is also possible.

Request HTTP callbacks for a later time. 8,000 free requests on signup.

Simplify workflows and create better APIs – faster – with Postman, a collaboration platform for API development. Use the Postman App for free forever. Postman cloud features are also free forever with certain limits.

Crawl and scrape websites without the need of proxies, infrastructure or browsers. We solve captchas for you and prevent you being blocked. The first 1000 calls are free of charge.

Create a free endpoint to which you can send HTTP requests. Any HTTP requests sent to that endpoint will be recorded with the associated payload and headers so you can observe requests from webhooks and other services.

APISpark enables any API, application or data owner to become an API provider in minutes via an intuitive browser interface

Web service to generate unique (cool :) images from any text.

SaaS that turns any website into a consumable API for you to build on. Free 50 extractions and 10000 API calls / month.

Cloud based web scraping API handles proxies, browsers, and CAPTCHAs. Scrape any web page with a simple API call. Get started with 1000 free API calls/month.

Headless Chrome scraping API and free checked proxies service. Javascript rendering, premium rotating proxies, CAPTCHAs avoiding. Free plans available.

Undetectable web scraping API using real Chrome browsers and proxy rotation. Use a simple API call to scrape any web page. Free plan has 1000 requests per month.

Scrapingdog handles millions of proxies, browsers and CAPTCHAs to provide you with HTML of any web page in a single API call. It also provides Web Scraper for Chrome & Firefox and a software for instant scraping demand. Free plans available.

Data scraping with visual interface and plugins. Free plan includes unlimited scraping on a shared server

Handle JS rendering, Chrome Headless, Proxy rotation and CAPTCHAs solving all in one place. The first 1000 are free of charge, no credit card required.

Instantly turn any Google Sheets into RESTful API. Free plan available.

Free URL Shortening API without authorisation and no request limits

Create secure RESTful APIs from CSV files. Upload a CSV file and instantly access the data via its API allowing faster application development. Free plan includes 2 APIs and 2,500 API calls per month. No credit card required.

Put deep-learning powered recommendations in your app. Free 5k monthly active users.

A time series analysis API

Highly available, fast and secure VAT validation API, that provides full European Union coverage. 10 free API calls per day.

Easily test HTTP webhooks with this handy tool that displays requests instantly.

NLP for developers

Built-in knowledge-based algorithms in the cloud

Turn any website into a parameterized API. 30k API calls per month

Web scraping API with headless browsers, residentials IPs and simple pricing. 1000 free API calls/month, extra free credits for students and non-profits

IP Geolocation API, Free for non-commercial use, no API key required, limited to 45 req/minute from the same IP address for the free plan.

Simple Web Scraping API with built-in parsing, Chrome rendering and proxies. 5000 free API calls per month.

Free Zip Code API, access to Worldwide Postal Code Data. 10000 free requests/month.

EVA

Free email vaidator API, which helps to identify whether an email is dispsable and having valid MX records.

Artifact Repos

The default artifact repository for Apache Maven, SBT and other build systems.

Cloud based, private and public, Maven and PyPi repositories. Free for open source projects.

Simple, secure and centralised repository service for Java/Maven, RedHat, Debian, Python, Ruby, Vagrant +more. Free tier + free for open source.

Maven repository for JVM and Android projects on GitHub, free for public projects.

1 GB Free private/public Maven Repository.

Tools for Teams and Collaboration

The easiest and safest way for individuals, teams, and business organizations to store, share, and sync sensitive data.

Find the perfect time and date for a meeting. Simple to use, works great for small and large groups.

telegram](https://twitter.com/telegram) | - | - |

Infamous note-taking app, available on many platforms. ![Freeware][Freeware Icon]

A Dropbox-like file manager that connects to a range of protocols and platforms: S3, FTP, SFTP, Minio, Git, WebDAV, Backblaze, LDAP and more.

A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations

flowdock](https://twitter.com/flowdock) | Free for teams up to 5 people | - |

Chat, for GitHub. Unlimited public rooms and one-to-one chats, free.

Free | Video conference and chat application by Google. It is browser based and supports multiple participants on the same video call. |

Help over video with augmented reality. Free without analytics, encryption, support

Allow clients to submit ideas and vote, free for 25 members in 1 community

Internal portal for sharing documents, blogs and calendars etc. Free for up to 10 users.

Secure groups, files, and chat for everyone! ![Open-Source Software][OSS Icon] ![Freeware][Freeware Icon]

Use Google Meet for your business's online video meeting needs. Meet provides secure, easy-to-join online meetings.

One click video conversations, screen sharing, for free

Microsoft Teams is a chat-based digital hub that brings conversations, content, and apps together in one place all from a single experience. Free for up to 300 users.

Scalable, secure, cross-device and enterprise-ready team collaboration whiteboard for distributed teams. With freemium plan.

Notion is the all-in-one workspace. From notes, tasks, wikis, to database, Notion is all you need. Works great for teams and individuals.

Pendulums is a free time tracking tool which helps you to manage your time in a better manner with an easy to use interface and useful statistics.

Private and secure bookmarking app for macOS, Windows, Android, iOS and Web. Free Unlimited Bookmarks and Collaboration.

A decentralized and open source communication tool built on Matrix. Group chats, direct messaging, encrypted file transfers, voice and video chats, and easy integration with other services.

Realtime chat application built with Meteor.

Reliable and High Speed File Sync and Share.![Freeware][Freeware Icon]

SlackHQ](https://twitter.com/slackhq) | Free - $12.5/user | Team collaboration and chat tool. Supports webhooks and has integrations with other tools. |

Create public or private communities for free.

A status page of status pages. Track the status pages of your upstream providers.

Free group video chat. Anonymous. Peer‑to‑peer. No plugins, signup, or payment required

Bookmarking app with a powerful Slack integration. Free for open-source teams.

An asynchronous-friendly team communication app where conversations stay organized and on-topic. Free and Unlimited plans available. Discounts provided for eligible teams.

Share and discuss ideas with your team through instant messaging on the web or on your mobile

Preview every pull request, automated and on-demand. Free for all, complimentary Nano tier for non-profits.

One click video conversations, for free (formerly known as appear.in)

Interconnected online personas, user stories and context mapping. Helps keep design and dev in sync, free for up to 3 personas and 2 collaborators.

Video hosting with viewer analytics, HD video delivery and marketing tools to help understand your visitors, 25 videos and Wistia branded player

Secure Video and Web conferencing, add-ons available. Free limited to 40 minutes

CMS

Hosting for Drupal sites. Free tier for developers. Free development tools (such as Acquia Dev Desktop) also available

Headless CMS. Content management and delivery APIs in the cloud. Comes with one free micro space that includes 10 users, 5000 records, 24 Content Types, 2 locales.

Headless CMS and API toolkit. Free personal plans for developers.

Headless CMS. Give your editors the power of Git. Create and edit Markdown-based content with ease. Comes with three free sites that includes 3 editors, Instant Previews. Integrates with blogs hosted on Netlify/GitHubpages/ elsewhere

A Content-as-a-Service platform that gives you all the headless CMS benefits while empowering marketers at the same time. Developer plan provides 2 users with unlimited projects with 2 environments for each, 500 content items, 2 languages with Delivery and Management API, and Custom elements support. Larger plans available to meet your needs.

Headless CMS. Content management interface with fully hosted and scalable API. The Community Plan provides 1 user with unlimited API calls, documents, custom types, assets, and locales. Everything that you need for your next project. Bigger free plans available for Open Content/Open Source projects.

Hosted backend for structured content with customizable MIT licensed editor built with React. Unlimited projects. 3 users, 2 datasets, 500k API CDN requests, 5GB assets for free per project

GraphQL based Headless Content Management System.

Code Quality

A complete workflow to write, review and deploy code), free account for 1 user and 1 repository with 100 MB of storage

Cross-browser test your website.

copyright: - Code Analysis to ship Better Code, Faster.

Automated Infrastructure as Code review tool for DevOps integrates with GitHub, Bitbucket and GitLab (even self-hosted). In addition to standard languages, it analyzes also Ansible, Terraform, CloudFormation, Kubernetes, and more. (open-source free)

copyright: - The open and extensible static analysis platform, for everyone.

Continuous Code Coverage

CodeScene prioritizes technical debt based on how the developers work with the code and visualizes organizational factors like team coupling and system mastery. Free for Open Source.

Display test coverage reports, free for Open Source

5 free analysis report for web performance, accessibility, security each month

DeepCode finds bugs, security vulnerabilities, performance and API issues based on AI. DeepCode's speed of analysis allow us to analyse your code in real time and deliver results when you hit the save button in your IDE. Supported languages are Java, C/C++, JavaScript, Python, and TypeScript. Integrations with GitHub, BitBucket and Gitlab. Free for open source and private repos, free up to 30 developers.

copyright: - An analyzer for JavaScript which targets runtime errors and quality issues rather than coding conventions.

copyright: - In-depth static analysis to find issues in verticals of bug risks, security, anti-patterns, performance, documentation and style. Native integrations with GitHub, GitLab and Bitbucket. Less than 5% false positives.

Gerrit code review for GitHub repositories for free

Code coverage for any Go package

Code Quality for Go projects, free for Open Source

GTmetrix uses Google Page Speed and Yahoo! YSlow to grade your site's performance and provides actionable recommendations to fix these issues.

Comments on GitHub commits about code quality, free for Open Source

reSmush.it is a FREE API that provides image optimization. reSmush.it has been implemented on the most common CMS such as Wordpress, Drupal or Magento. reSmush.it is the most used image optimization API with more than 7 billions images already treated, and is still Free of charge.

copyright: - Detect security risks, find bugs and provide actionable metrics for PHP projects.

Automated Git code review for GitHub and Bitbucket pull requests for finding security vulnerabilities and code quality issues.

Code review tool built on top of GitHub pull requests.

Static code analysis for Java, C/C++, C# and JavaScript, free for Open Source

Quality metadata badges for open source projects

copyright: - An automated code reviewing tool. Improving developers' productivity.

copyright: - Multilanguage cloud-based static code analysis. History, trends, security hot-spots, pull request analysis and more. Free for open source.

SEO tools but with also code verifications and different type of advices

Fix the performance of your web sites, detailed analysis

Code Search and Browsing

Codota helps developers create better software, faster by providing insights learned from all the code in the world. Plugin available.

Search and dependency update notifications for 32 different package managers, free for open source

Comprehensive text-based code search, free for Open Source

Java, Go, Python, Node.js, etc., code search/cross-references, free for Open Source

Surfaces TODO comments (and other markers) to identify areas of code worth returning to for improvement.

CI and CD

List of Continuous Integration services

2.41K
206
10m
MIT

Automated mobile CI/CD/CT for iOS with online device simulators

NET Continuous Integration and Deployment as a service. [$] [Free for OSS]

Cloud based continuous integration and delivery for mobile, free for OSS

A CI/CD with 5 free projects and 1 concurrent runs (120 executions/month)

A mobile iteration platform - build, deploy, and collaborate.

Automates your software builds, tests, and deployments.

Free for open source, supports Linux, Windows, macOS and FreeBSD, flexible hosted CI service

heavy_dollar_sign: - Everything you need to build, test, and share your Docker applications. Provides automated end to end testing.

Automate the entire flow, build and distribution by NeverCode.

100 private builds/month, 5 private projects, unlimited for Open Source

CI/CD for PHP applications.

1 project with 10 daily deployments (30 build minutes/month)

Drone Cloud enables developers to run Continuous Delivery pipelines across multiple architectures - including x86 and Arm (both 32 bit and 64 bit) - all in one place

A continuous integration platform for open source and private projects.

100% free. Unlimited deployments, branches and builds

Public GitHub repositories only

integromat](https://twitter.com/integromat) | Free for < 1000 operations or 100 MB/mo, paid from $9/mo | Automates your tasks & connects to almost any app or service. Very powerful toolset with features like error handling, iterators, aggregators, routers, functions, data stores, etc. |

Testing

smart visual validation for web, native mobile and desktop apps. Integrates with almost all automation solutions (like Selenium and Karma) and remote runners (Sauce Labs, Browser Stack). free for open source. A free tier for a single user with limited checkpoints per week.

Test your website for cross browser compatibility on real browsers. Instant access to multiple desktop and mobile browsers. Get Free Trial.

Browser extension that tests if your website follows 50+ SEO, speed and security best practices. Free tier for smaller websites.

Manual & exploratory testing on 1500+ real browsers and mobile devices.

Complete end-to-end testing framework for anything that runs in a browser and beyond.

Records and replays all steps made in a web browser and creates scripts,... free with fewer options

Gremlin's Chaos Engineering tools allow you to safely, securely, and simply inject failure into your systems to find weaknesses before they cause customer-facing issues. Gremlin Free provides access to Shutdown and CPU attacks on up to 5 hosts or containers.

Selenium Grid testing with free plan up to 4 simultaneous selenium nodes/10 grid starts/4,000 test minutes/month

Continuous visual reviews for web apps.

Visual regression testing and test automation tool.

Cross browser testing, Selenium testing and mobile testing, free for Open Source

Selenium Browser and Device Testing, free for Open Source

free for Open Source accounts for 450 results per month.

Test results reporting and test case management. Integrates with popular test frameworks. Open Source software developers, individuals, educators, and small teams getting started can request discounted and free offerings beyond basic free project.

Various free network and server tools.

Test management system for Dev and QA teams. Manage test cases, compose test runs, perform test runs, track defects and measure impact. The free tier includes all core features, with 500Mb available for attachments and up to 3 users.

Easily test HTTP webhooks with this handy tool that displays requests instantly.

Event-driven framework that uses standard web components. Server-side architecture with Ajax on the client side.

Security and PKI

Uncovers compromised systems in your network

Authentication, done for you.

Two-factor authentication token manager that backs up and syncs across your devices. ![Freeware][Freeware Icon]

Checkov. The core Bridgecrew platform is free for up to 50 IaC resources.

Amazon Web Services (AWS) security and compliance auditing and monitoring

Open Source platform with indelible proof to notarize code, files, directories or container

Cloud-first, developer-friendly security platform prevents data breaches in .NET and Java applications

Dependabot is a dependency update service. It monitors and updates your dependencies by sending a pull-request. The service is free for public repos and personal account repos.

duosec](https://twitter.com/duosec) | - | - |

REST API for fetching the information on the breaches.

Test for modern Internet Standards like IPv6, DNSSEC, HTTPS, DMARC, STARTTLS and DANE

Provides directory as a service similar to Azure AD, user management, single sign-on, and RADIUS authentication. Free for up to 10 users.

SSL expiry management and cert purchase with an integrated CT database

Free SSL Certificate Authority with certs trusted by all major browsers

Managed User Authentication service for free. Email registartion and 3 social providers.

Two-factor authentication (2FA) by push notifications, free for 10 users, VPN, Websites and SSH

Monitor Java, Javascript, .NET, Scala, Ruby and NodeJS projects for security vulnerabilities in dependencies. Free for one private project, unlimited projects for open source.

Find and fix security vulnerabilities in your site.

OktaDev](https://twitter.com/OktaDev) | Free | Okta adds authentication, authorization, and user management to your web or mobile app within minutes. |

Authentication focussed on company internal applications.

Security Monitoring of computers, devices, applications, configurations,... Free 25 users and 30 days history

Monitor Python dependencies for security vulnerabilities and update them automatically. Free for one private project, unlimited projects for open source.

Find web app vulnerabilities, audit for OWASP Risks

CSP and HPKP violation reporting

Tools to use phone number as id, available for free

Can find and fix known security vulnerabilities in your open source dependencies. Unlimited tests and remediation for open source projects. Limited to 200 tests/month for your private projects.

Online service that performs a deep analysis of the configuration of any SSL web server on the public internet. Provided by Qualys SSL Labs.

Free website security check and malware scanner

Free website security check, site antivirus and server firewall (WAF). Email and SMS notifications for registered users.

Threat intelligence: It is designed for individual researchers, analysts and organizations who are starting to learn about cyber threat intelligence. Free up to 3 Users

tinfoilsecurity](https://twitter.com/tinfoilsecurity) | - | - |

Tools and services for implementing end-to-end encryption, database protection, IoT security and more in your digital solution. Free for applications with up to 250 users.

Privacy-oriented file/data scanning powered by hybrid heuristic and AI-assisted engine. Possible to use internal dynamic sandbox analysis. Limited to 50MB per file upload

Management System

Deploy prepared apps on IaaS. Management of 1 AWS micro instance free

Device management for iPads, iPhones and Macs, 3 devices free

Help developers deploy and manage their web apps and servers. Free up to 25 git deployments per month

Messaging

RabbitMQ as a Service. Little Lemur plan: max 1 million messages/month, max 20 concurrent connections, max 100 queues, max 10,000 queued messages, multiple nodes in different AZ's

Realtime messaging service. Free for up to 100 simultaneous connections and 200,000 messages/day

Realtime messaging service. Free for up to 20 simultaneous connections and 100,000 events/day

NATS.io](https://nats.io) as a service. Global, AWS, GCP, and Azure. Free forever with 4k msg size, 50 active connections and 5GB of data per month.

Free Shared Kafka cluster, up to 5 topics, 10MB data per topic and 28 days of data retention.

Data stream network

Log Management

Free up to 100k log lines/day with 24 hours retention

Free up to 2 GB/day with 7 days retention

logdna](https://twitter.com/LogDNA) | free - $3/gb | Log Management Modernized: Real-time log aggregation, monitoring, and analysis from any platform, at any volume. |

Free up to 5 GB/month with 7 days retention

Free for a single user, see the lite option

Free up to 3 GB/day, 3 days retention

48 hours search, 7 days archive, 100 MB/month

Free up to 500 MB/day, 7 days retention

cloud based analyzer for machine-generated data.

Translation Management

Unlimited projects, unlimited strings and collaborators for Open Source

Free up to 3 users, always free for Open Source

Free up to 2000 translations, Unlimited translators, 10 languages/project, 1000 translatable assets/project

Limited free edition for up to 5 users, free for Open Source

Free up to 1000 strings

It's free for libre projects up to 10,000 string source for the free tier, and Unlimited Self-hosted on-premises.

Monitoring

Free for 24 hours metrics, application performance management agents limited to one Java, one .NET, one PHP and one Node.js

AppNeta](https://twitter.com/Appneta) | - | - |

Continuously test and monitor your APIs after deployments and across environments.

Blackfire is the SaaS-delivered Application Performance Solution. Free Hacker plan (PHP only)

AWS security and configuration monitoring. Free: unlimited on-demand scans, unlimited users, unlimited stored accounts. Subscription: automated scanning, API access, etc.

heavy_dollar_sign: - Datadog is a full-stack monitoring service for large-scale cloud environments that aggregates metrics/events from servers, databases, and applications. It includes support for Docker, Kubernetes, and Mesos.

Monitoring for cron jobs. 1 free snitch (monitor), more if you refer others to sign up

Instant performance insights for JS developers. Free with 24 hours data retention

Free for public projects. Dashboards for your Internet of Things (IoT) projects

Monitor 50 URLs at 1-minute interval with 10 Global locations and 5 Public status pages for Free

Measure and visualize coding hours, productivity, efficiency of projects, teams, repos or individual developers.

Monitor your cron jobs and background tasks. Free for up to 20 checks.

A complete Real-Time monitoring dashboard in less than one minute with free forever tier.

Beautiful and easy-to-use application and server monitoring with up to 500 metrics and 3 hours of data visibility for free

Independent speed test and TLS handshake latency test against Digital Ocean

SSL monitoring, free for up to 5 monitors

Free load testing tools with limitations

Free for one server. E-Mail Notifications, public status page, 60 second interval and more.

Free basic server monitors up to 10 servers

Powerful alerting and on-call management for operating always-on services. Free up to 5 users.

Powerful infrastructure and network monitoring solution including alerting, strong visualization capabilities and basic reporting. Free up to 100 sensors.

Simple interface for alerting and on-call management. Free up to 5 users.

Free site and SSL Monitoring with response time alerting (on Slack, Twitter, Mattermost, Discord or custom Webhook).

Free for 24 hours metrics, unlimited number of servers, 10 custom metrics, 500,000 custom metrics data points, unlimited dashboards, users, etc.

Website, domain, Cron & SSL monitoring, 5 monitors in each category for free

Free for first 100,000 requests (Rails only)

Performance Monitoring API, checks Ping, DNS, etc.

Get started with 10 stats for free, no expiration

Website monitoring, unlimited tests free with limitations

Network and user experience monitoring. 3 locations and 20 data feeds of major web services free

uptimerobot](https://twitter.com/uptimerobot) | - | - |

Free monitoring for 5 websites, 60 second intervals, public statuspage.

End-to-end incident management, alerting, on-call management and response orchestration platform for network operations, site reliability engineering and DevOps teams. Free for upto 5 users.

Crash and Exception Handling

Cross platform error monitoring. Free tier. Support for SDK & NDK. Error reports include data on device, release, user, and allows arbitrary data.

requires-approvalnon-commercial` - Exception and uptime monitoring for Ruby.

Error monitoring with the ability to replay HTTP requests that caused errors.

Sentry provides self-hosted and cloud-based error monitoring that helps all software teams discover, triage, and prioritize errors in real-time.

Search

Hosted Search API that delivers instant and relevant results from the first keystroke.

bonsaisearch](https://twitter.com/bonsaisearch) | - | - |

Free 2 indices and 20 MB storage

AI search as a service the free tier includes 1000 Documents, 50000 searches. Larger free tiers are possible for worthwhile projects.

Email

Free, temporary email for testing.

Open-source anonymous email forwarding, create unlimited email aliases for free

5,000 mailboxes with 25 GB each per custom domain with DNS hosting

Free 5 Burner Email Addresses, 1 Mailbox, 7 day Mailbox History

buttondownemail](https://twitter.com/buttondownemail) | Free for 1000 subscribers, afterwards paid | Simple and carefully thought out newsletter tool using markdown as language.

Email validation and verification API for developers, 2,000 free API requests/month

Contact form in a link (bitly for contact forms) - totally free!

Easy to use testing mail server for developers

100 free emails/day. 1,000 emails for $0.09 through API (pay as you go).

emailoctopus](https://twitter.com/emailoctopus) | Free up to 2,500 subscribers, paid plans from $19/mo | Low cost email marketing using Amazon SES.

Free email forwarding for custom domains. Create and forward an unlimited amount of email addresses with your domain name.

Free email forwarding

SMTP based spam filter, free for 10 users

Verify 100 emails free, real-time API available

Test if email's dns/spf/dkim/dmarc settings are correct, 20 free/month

Email validation and verification JSON API for developers. 1,000 free API requests/month

A local fake SMTP server (based on Ruby)

MailChimp provides email marketing for more than 15 million people globally.

1,000 subscribers/month, 12,000 emails/month free

Free, public, email system where you can use any inbox you want

6,000 emails/month free (200 emails daily sending limit)

Free for life without commitment, 10,000 emails/month, 1,000 emails/day

Free temporary/disposable email, which auto visit registration link.

Fake SMTP server for development, free plan with 1 inbox, 50 messages, no team member, 2 emails/second, no forward rules

Disposable email service to automate the email workflow testing, This document explains how to implement Mail7 with Selenium

Disposable temporary email

Mailing list management service. Free account for 6 months for startups

30k emails free for first month, then first 100 emails/day free

Hosted version allow 300 emails/month free

100 emails/month free, unlimited DMARC weekly digests

Up to 15 000 emails/month - Up to 2 500 subscribers

Delivering your transactional and marketing email through one reliable platform.

50 emails free/hour, first 12,000 emails/month free

40k emails free for first month, then first 2000 emails/month free

Your application’s emails: Delivered on time and to the inbox.

Unlimited free newsletter service. Start paying when you charge for it.

Automate end-to-end email tests with unlimited mailboxes and a GraphQL API. 100 emails/month free forever, unlimited free for open source.

5,000 subscribers/month free

Free disposable email addresses with forwarding and automatic address expiration

Free API to detect disposable emails

Real-time email verification API with mailbox confirmation and disposable email address detector; 25 free email verifications/day.

Bulk and API email verification service. 100 free verifications/month

Free email and DNS hosting for up to 1,000 users

Disposable email addresses

Assist for 1 remote technician & 5 unattended computers.

Open source, self-hostable email alias/forwarding solution. Free 5 Aliases, unlimited bandwith, unlimited reply/send. Free for educational staffs (student, researcher, etc).

Font

The fonts presented on this website are their authors' property, and are either freeware, shareware, demo versions or public domain.

Offers multiple tools; @font-face, Units Converter, Font Hinter and Font Submitter.

A curated collection of free fonts from a variety of foundries

Download Free Fonts.

Forms

Build forms and share them online. Get an email or Slack message for each submission. Free plan has 2 forms, 100 entries per month, basic email & Slack.

The form backend built for developers: Zapier integrations, simple endpoint API, unlimited forms.

0/mo - $99/mo | Handle forms without a single line of back-end code. |

Easy HTML forms for static websites, get started for free without registering an account. Free plan allows 500 submissions per month, customizable reply-to email address.

Online forms, unlimited single page forms/month, 100 submissions/month, email notifications.

Form to Email service, free plan allows unlimited forms, 500 submissions per month, support by Customer assistance team.

Send email using an HTTP POST request. Free tier limits to 1000 submissions per month and must expose email address in the API call.

Form backend platform for designers and developers, 1 form, 100 submissions, Single file upload, 100MB file storage.

Feature rich form endpoint. Works great with static sites. Free plan includes up 1 website with up to 50 submissions per month.

Powerful and easy form backend for your website, forever free plan allows 50 submissions per month, 100MB file storage, Zapier integration, CSV/JSON export, custom redirect, custom response page, Telegram & Slack bot, single email notifications.

Form that sends its results to your email.

Include beautifully designed forms on websites. Free plan allows only 10 fields per form and 100 responses per month.

Electronic Signature platform with a REST API. Receive notifications with webhooks. Free plan watermarks signed documents, but allows unlimited envelopes + signatures.

Quick forms to use on websites. Free plan has a limit of 100 submissions each month.

CDN and Protection

CDN for bootstrap, bootswatch and fontawesome.io

An open source CDN for JavaScript and CSS sponsored by CloudFlare that hosts everything from jQuery and Modernizr to Bootstrap.

Cloudflare](https://twitter.com/Cloudflare) | - | - |

example from this repo. Similar to rawgit.com and raw.githack.com.