Free for Developers

This is a full list of services, software and tools that are available for developers. There are already existing lists available, that are comprehensive and include majority of those listed here. However, we felt that we could update ours more often.

The scope of this particular list is limited to things infrastructure developers (System Administrator, DevOps Practitioners, etc.) are likely to find useful. We love all the free services out there, but it would be good to keep it on topic. It's a bit of a grey line at times so this is a bit opinionated; do not be offended if I do not accept your contribution.

Table of Contents

• Source code Repositories
• Tools for Teams and Collaborations
• Code Quality
• Code Search and Browsing
• CI/CD
• Management Systems
• Log Management
• Translation Management
• Monitoring
• Crash/Exception Handling
• Search
• Email
• CDN and Protection

Source code Repositories

• Azure DevOps - Unlimited private repos (Git and TFS) for up to 5 users/team
• BitBucket - Free unlimited public and private repos (Git and Mercurial) for up to 5 users
• ChiselApp - Unlimited public and private Fossil repositories
• FogCreek — Free unlimited public and private repos (hybrid of Git and Mercurial) for 2 users
• Google Cloud — Free private Git repositories hosted on Google Cloud Platform. Supports syncing with existing GitHub and Bitbucket repos. Free Beta for up to 500 MB of storage
• CodeBaseHQ - One free project with 100 MB space and 2 users
• Codeberg - Unlimited public and private Git repos
• Gitea.com - Unlimited public and private Git repos
• Github - Unlimited public repositories and unlimited private repositories (with unlimited collaborators) with Pipelines for CI/CD
• Gitlab - Unlimited public and private Git repos with unlimited collaborators, with Pipelines for CI/CD, and 10 GB space per repo
• Jazz - Unlimited public repos, private repos free for up to 3 accounts
• Ionicframework - Repo and tools to develop applications with Ionic, also you have an ionic repo
• Perforce - Free 1GB Cloud and Git, Mercurial, or SVN repositories.
• Pijul - 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.
• Plasticscm - Free for individuals, OSS and nonprofit organizations
• Projectlocker - One free private project (Git and Subversion) with 50 MB space
• Savannah GNU - Serves as a collaborative software development management system for free Software projects (for GNU Projects)
• Savannah Non GNU - Serves as a collaborative software development management system for free Software projects (for non-GNU projects)
• Visual Studio - Free unlimited private repos (Git and TFS) for up to 5 users per team

Tools for Teams and Collaborations

• Appear - One click video conversations, for free
• Bitwarden - The easiest and safest way for individuals, teams, and business organizations to store, share, and sync sensitive data.
• Blockspring - Share scripts with anyone on your team: cross language and with spreadsheet users. Free for 5 million runs a month.
• Cally - Find the perfect time and date for a meeting. Simple to use, works great for small and large groups.
• Clickup - Cloud-based collaboration and project management tool suitable for businesses of all sizes and industries
• Discord - Chat with public/private Rooms & VoIP Service. Free for unlimited users.
• Doodle - The scheduling tool you'll actually use. Find a date for a meeting 2x faster!
• Evernote - Tool for organizing information. Share your notes and work together with others.
• FeaturePeek - Cloud provider-agnostic front-end feature environments with team collaboration tools built-in. Works with static and Dockerized front-ends. Free for public repositories.
• FileHero - Make it easy to access your company's file storage from a corporate download page. Free for 5 concurrent downloads.
• Flock - A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations
• Flowdock - Chat and inbox, free for teams up to 5
• GitDuck - Private live coding and remote pair programming for distributed teams. Open-source tool
• Gitter - Chat, for GitHub. Unlimited public and private rooms, free for teams up to 25
• Google Hangouts - One place for all your Conversations, for free (Need Google Account)
• Google Meet - Use Google Meet for your business's online video meeting needs. Meet provides secure, easy-to-join online meetings.
• Helplightning - Help over video with augmented reality. Free without analytics, encryption, support
• Helpmonks - Shared inbox for teams, free for Open Source and nonprofit organizations
• HipChat - Free for unlimited users with some feature limitations
• Ideascale - Allow clients to submit ideas and vote, free for 25 members in 1 community
• Igloo - Internal portal for sharing documents, blogs and calendars etc. Free for up to 10 users.
• Jit - One click video conversations, screen sharing, for free
• Kato - Team Chat & Collaboration, free for unlimited users with some feature limitations
• Microsoft Teams - 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.
• Miro - Scalable, secure, cross-device and enterprise-ready team collaboration whiteboard for distributed teams. With freemium plan.
• Notion - Notion is a note-taking and collaboration application with markdown support that also integrates tasks, wikis, and databases. The company describes the app as an all-in-one workspace for note-taking, project management and task management. In addition to cross-platform apps, it can be accessed via most web browsers.
• Pendulums - 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.
• Raindrop - Private and secure bookmarking app for macOS, Windows, Android, iOS and Web. Free Unlimited Bookmarks and Collaboration.
• Riot - A decentralized communication tool built on Matrix. Group chats, direct messaging, encrypted file transfers, voice and video chats, and easy integration with other services.
• Rocket.Chat - Shared inbox for teams, secure, unlimited and open source.
• Sameroom - Free for unlimited users with some feature limitations
• Seafile - Private or cloud storage, file sharing, sync, discussions. Private version is full. Cloud version has just 1 GB
• Sendtonic - Share links, notes, files and have discussions. Free for 3, 100 MB.
• Slack - Free for unlimited users with some feature limitations
• Sourcetalk - Code discussion tool, free for open code talks.
• Spectrum - Create public or private communities for free.
• StatusPile - A status page of status pages. Track the status pages of your upstream providers.
• Tadum - Meeting agenda and minutes app designed for recurring meetings, free for teams up to 10
• Talky - Free group video chat. Anonymous. Peer‑to‑peer. No plugins, signup, or payment required
• Tefter - Bookmarking app with a powerful Slack integration. Free for open-source teams.
• Twist - An asynchronous-friendly team communication app where conversations stay organized and on-topic. Free and Unlimited plans available. Discounts provided for eligible teams.
• Typetalk - Share and discuss ideas with your team through instant messaging on the web or on your mobile
• Tugboat - Preview every pull request, automated and on-demand. Free for all, complimentary Nano tier for non-profits.
• Vipaar - Help over video with augmented reality. Free without analytics, encryption, support.
• Whereby - One click video conversations, for free (formerly known as appear.in)
• Wistia - Video hosting with viewer analytics, HD video delivery and marketing tools to help understand your visitors, 25 videos and Wistia branded player
• Wunderlist - Share your lists and work collaboratively on projects with your colleagues - Available for free to download and use on iPhone,iPad,Mac,Android,Windows and the Web.
• Yammer - Private social network standalone or for MS Office 365. Free with a bit less admin tools and user management features
• Zoom - Secure Video and Web conferencing, add-ons available. Free limited to 40 minutes

Code Quality

• Beanstalkapp - A complete workflow to write, review and deploy code), free account for 1 user and 1 repository with 100 MB of storage
• Browserling - Live interactive cross-browser testing, free only 3 minutes sessions with MS IE 9 under Vista at 1024 x 768 resolution
• Codacy - Automated code reviews for PHP, Python, Ruby, Java, JavaScript, Scala, CSS and CoffeeScript, free for unlimited public and private repositories
• Codeac - 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)
• Codeclimate - Automated code review, free for Open Source and unlimited organisation-owned private repos (up to 4 collaborators). Also free for students and institutions.
• Codecov - Code coverage tool (SaaS), free for Open Source and 1 free private repo
• Codescene - 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.
• Coveralls - Display test coverage reports, free for Open Source
• Dareboost - 5 free analysis report for web performance, accessibility, security each month
• Deepcode - 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.
• Deepscan - Advanced static analysis for automatically finding runtime errors in JavaScript code, free for Open Source
• DeepSource - DeepSource continuously analyzes source code changes and finds issues categorized under security, performance, anti-patterns, bug-risks, documentation and style. For Python and Go. Free for open source.
• Gerrithub - Gerrit code review for GitHub repositories for free
• Gocover - Code coverage for any Go package
• Golangci - Automated Go (golang) code review service for GitHub pull requests.
• Goreportcard - Code Quality for Go projects, free for Open Source
• Gtmetrix - Reports and thorough recommendations to optimize websites
• Hiberly - Tech debt toolkit for developers - grabs feedback from engineers after each merge, then aggregates this to quantify and highlight tech debt in the codebase. Free for use in retrospectives for up to 12 months.
• Houndci - Comments on GitHub commits about code quality, free for Open Source
• lgtm - Continuous security analysis for Java, Python, JavaScript, TypeScript, C#, C and C++, free for Open Source
• Imgbot - Imgbot is a friendly robot that optimizes your images and saves you time. Optimized images mean smaller file sizes without sacrificing quality. It's free for open source.
• Inch-ci - Documentation badges for Ruby, JS & Elixir
• Insight Sensiolabs - Code Quality for PHP/Symfony projects, free for Open Source
• Landscape - Code Quality for Python projects, free for Open Source
• Pullreview. - Automated Code Review for Ruby in GitHub, Bitbucket and Gitlab - free for Open Source
• Reviewable - Code review for GitHub repositories, free for public or personal repos
• Scan Coverity - Static code analysis for Java, C/C++, C# and JavaScript, free for Open Source
• Scrutinizer-ci - Continuous inspection platform, free for Open Source
• Shields - Quality metadata badges for open source projects
• Sonarcloud - Automated source code analysis for Java, JavaScript, C/C++, C#, VB.NET, PHP, Objective-C, Swift, Python, Groovy and even more languages, free for Open Source
• Tachikoma - Dependency Update for Ruby, Node.js, Perl projects, free for Open Source
• Testanywhere - Automatic test website or web app continuously and catch bugs in the early stages, free 1,000 tests/month
• Typo CI - Typo CI reviews your Pull Requests and commits for spelling mistakes, free for Open Source.
• Webceo - SEO tools but with also code verifications and different type of advices
• Zoompf - Fix the performance of your web sites, detailed analysis

Code Search and Browsing

• Codota - Codota helps developers create better software, faster by providing insights learned from all the code in the world. Plugin available.
• Libraries - Search and dependency update notifications for 32 different package managers, free for open source
• Searchcode - Comprehensive text-based code search, free for Open Source
• Sourcegraph - Java, Go, Python, Node.js, etc., code search/cross-references, free for Open Source
• Tickgit - Surfaces TODO comments (and other markers) to identify areas of code worth returning to for improvement.

CI / CD

• AccessLint - AccessLint brings automated web accessibility testing into your development workflow. It's free for open source and education purposes.
• Appveyor - CD service for Windows, free for Open Source
• Azure Pipelines - 10 free parallel jobs with unlimited minutes for open source for Linux, macOS, and Windows
• Bitrise - A CI/CD for mobile apps, native or hybrid. With 200 free builds/month 10 min build time and two team members. OSS projects get 45 min build time, +1 concurrency and unlimited team size.
• Buddy Works - A CI/CD with 5 free projects and 1 concurrent runs (120 executions/month)
• Buddybuild - Build, deploy and gather feedback for your iOS and Android apps in one seamless, iterative system
• Circleci - Free for one concurrent build
• Cirrus-ci - Free for public GitHub repositories
• Codefresh - Free-for-Life plan: 1 build, 1 environment, shared servers, unlimited public repos
• Codemagic - Free 500 build minutes/month
• Codeship - 100 private builds/month, 5 private projects, unlimited for Open Source
• Deployhq - 1 project with 10 daily deployments (30 build minutes/month)
• Dploy - Free for 1 repository, private or public. Supports any service you can throw at it.
• Drone - 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
• Fploy - 1 project w/ unlimited deployments
• Gitlab - Create pipelines directly from Git repositories using GitLab's CI service. 2,000min/mo
• Hub Jazz - 60 minutes of free build time / month.
• Ligurio/awesome-ci - Comparison of Continuous Integration services
• Saucelabs - CI with scalable testing for mobile and web apps, free for Open Source
• Semaphoreci - Free for Open Source, 100 private builds per month
• Shippable - 150 private builds/month, free for 1 build container, private and public repos
• Snap-ci - Free for public repositories, 1 build at the time
• Stackahoy - 100% free. Unlimited deployments, branches and builds
• Styleci - Public GitHub repositories only
• Travis-ci - Free for public GitHub repositories
• Wercker - Free for public and private repositories

Management Systems

• Bitnami - Deploy prepared apps on IaaS. Management of 1 AWS micro instance free
• Jamf - Device management for iPads, iPhones and Macs, 3 devices free
• Moss - Help developers deploy and manage their web apps and servers. Free up to 25 git deployments per month
• Runcloud - Server management focusing mainly on PHP projects. Free for up to 1 server.
• VisualOps - 3,600 instance hours per month free

Messaging

• Cloudamqp - 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
• Cloudkarafka - Free Shared Kafka cluser, up to 5 topics, 10MB data per topic and 28 days of data retention.
• Pusher - Realtime messaging service. Free for up to 100 simultaneous connections and 200,000 messages/day
• Scaledrone - Realtime messaging service. Free for up to 20 simultaneous connections and 100,000 events/day
• Synadia - 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.

Log Management

• Bugfender - Free up to 100k log lines/day with 24 hours retention
• Humio - Free up to 2 GB/day with 7 days retention
• Logentries - Free up to 5 GB/month with 7 days retention
• Loggly - Free for a single user, see the lite option
• Logz - Free up to 3 GB/day, 3 days retention
• Papertrailapp - 48 hours search, 7 days archive, 100 MB/month
• Sematext - Free up to 500 MB/day, 7 days retention
• Splunk - Free for a single user, 500 MB/day
• Sumologic - Free up to 500 MB/day, 7 days retention

Translation Management

• Crowdin - Unlimited projects, unlimited strings and collaborators for Open Source
• Lingohub - Free up to 3 users, always free for Open Source
• Localizely - Free for Open Source
• Loco - Free up to 2000 translations, Unlimited translators, 10 languages/project, 1000 translatable assets/project
• Pneskyapp - Limited free edition for up to 5 users, free for Open Source
• POEditor - Free up to 1000 strings
• Transifex - Free for Open Source
• Webtranslateit - Free up to 500 strings

Monitoring

• Apimetrics - Automated API Performance Monitoring, Testing and Analytics. Free Plan, manually make API calls and Run from their West Coast servers
• Appdynamics - Free for 24 hours metrics, application performance management agents limited to one Java, one .NET, one PHP and one Node.js
• Appneta - Free with 1-hour data retention
• Assertible - Automated API testing and monitoring. Free plans for teams and individuals.
• Bearer - Automatically Monitor API Requests, Track Performance, Detect Anomalies and Fix Issues on your critical API Usage. Install the Bearer Agent for Free with 1 line of code.
• Blackfire - Blackfire is the SaaS-delivered Application Performance Solution. Free Hacker plan (PHP only)
• Bmc - Free 1 second resolution for up to 10 servers
• Circonus - Free for 20 metrics
• Cloudsploit - AWS security and configuration monitoring. Free: unlimited on-demand scans, unlimited users, unlimited stored accounts. Subscription: automated scanning, API access, etc.
• Datadoghq - Free for up to 5 nodes
• Deadmanssnitch - Monitoring for cron jobs. 1 free snitch (monitor), more if you refer others to sign up
• Elastic - Instant performance insights for JS developers. Free with 24 hours data retention
• Freeboard - Free for public projects. Dashboards for your Internet of Things (IoT) projects
• Freshworks - Monitor 50 URLs at 1-minute interval with 10 Global locations and 5 Public status pages for Free
• Ghostinspector - Free website and web application monitoring. Single user, 100 test runs/month
• Gitential - Software Development Analytics platform. Free: unlimited public repositories, unlimited users, free trial for private repos. On-prem version available for enterprise.
• Healthchecks - Monitor your cron jobs and background tasks. Free for up to 20 checks.
• Inspector - A complete Real-Time monitoring dashboard in less than one minute with free forever tier.
• Instrumentalapp - Beautiful and easy-to-use application and server monitoring with up to 500 metrics and 3 hours of data visibility for free
• Java Monitor - Free monitoring of JVM's and uptime
• Keychest - Independent speed test and TLS handshake latency test against Digital Ocean
• Keymetrics - Free for 2 servers with 7 days data retention
• Letsmonitor - SSL monitoring, free for up to 5 monitors
• Loader — Free load testing tools with limitations
• Newrelic - Free with 24 hour data retention
• Nixstats - Free for one server. E-Mail Notifications, public status page, 60 second interval and more.
• Nodequery - Free basic server monitors up to 10 servers
• Opbeat - Application performance, errors & releases. Free with 24 hour data retention.
• Opsgenie - Powerful alerting and on-call management for operating always-on services. Free up to 5 users.
• Paessler - Powerful infrastructure and network monitoring solution including alerting, strong visualization capabilities and basic reporting. Free up to 100 sensors.
• Pagertree - Simple interface for alerting and on-call management. Free up to 5 users.
• Pingbreak - Modern uptime monitoring service. Check unlimited URLs and get downtime notifications via Discord, Slack or email.
• Runscope - Monitor and log API usage. Single user 10,000 request/month free
• Sealion - Free up to 2 servers, 3 days data retention, graphs and raw command output history (top, ps, ifconfig, netstat, iostat, free, custom, etc.)
• Sematext - Free for 24 hours metrics, unlimited number of servers, 10 custom metrics, 500,000 custom metrics data points, unlimited dashboards, users, etc.
• Sitemonki - Website, domain, Cron & SSL monitoring, 5 monitors in each category for free
• Skylight - Free for first 100,000 requests (Rails only)
• Speedchecker — Performance Monitoring API, checks Ping, DNS, etc.
• Stackdriver - Free for up to 10 nodes/services
• Stathat - Get started with 10 stats for free, no expiration
• Statuscake - Website monitoring, unlimited tests free with limitations
• Thousandeyes - Network and user experience monitoring. 3 locations and 20 data feeds of major web services free
• Uptimerobot - Website monitoring, 50 monitors free
• Watchsumo - Free website monitoring, 50 Http(s), Ping or Keywords, every 5+ minutes

Crash/Exception Handling

• Airbrake - Free for 1 project, 1 user, 2 errors per minute, 2 day retention
• Bugsnag - Free for up to 2,000 errors/month after the initial trial
• Honeybadger - Exception, uptime, and cron monitoring. Free for solo devs and open-source projects (12,000 errors/month).
• Logrocket - Logging and session replay for javascript apps. Free for 1,000 sessions a month, 14 days retention
• Rollbar - Exception and error monitoring, free plan with 5,000 errors/month, unlimited users, 30 days retention
• Sentry - Sentry tracks app exceptions in real-time, has a small free plan. Free for 5k errors per month/ 1 user, unrestricted use if self-hosted

Search

• Algolia - Hosted search-as-you-type (instant). Free hacker plan up to 10,000 documents and 100,000 operations. Bigger free plans available for community/Open Source projects
• Bonsai - Free 1 GB memory and 1 GB storage
• Facetflow - Hosted Elasticsearch for Microsoft Azure. Free 5000 docs / 500 MB
• Indexisto - Site search reinvented. Free 10,000,000 document index limit with advertisement block.
• Searchly - Free 2 indices and 20 MB storage
• Swiftype - hosted search solution (API and crawler). Free for a single search engine with up to 1000 documents. Free upgrade to Premium level for open-source projects.
• Pagedart - AI search as a service the free tier includes 1000 Documents, 50000 searches. Larger free tiers are possible for worthwhile projects.

Email

• 10minutemail - Free, temporary email for testing.
• AnonAddy - Open-source anonymous email forwarding, create unlimited email aliases for free
• Biz Mail - 5,000 mailboxes with 25 GB each per custom domain with DNS hosting
• Burnermail - Free 5 Burner Email Addresses, 1 Mailbox, 7 day Mailbox History
• Buttondown - Newsletter service. Up to 1,000 subscribers free
• Cloudmersive - Email validation and verification API for developers, 2,000 free API requests/month
• Contact - Contact form in a link (bitly for contact forms) - totally free!
• Debugmail - Easy to use testing mail server for developers
• Elasticemail - 100 free emails/day. 1,000 emails for $0.09 through API (pay as you go).
• Forwardemail - Free email forwarding for custom domains. Create and forward an unlimited amount of email addresses with your domain name.
• ImprovMX - Free email forwarding
• Inumbo - SMTP based spam filter, free for 10 users
• Kickbox - Verify 100 emails free, real-time API available
• Mail-tester - Test if email's dns/spf/dkim/dmarc settings are correct, 20 free/month
• Mailboxlayer - Email validation and verification JSON API for developers. 1,000 free API requests/month
• Mailcatcher - Catches mail and serves it through a web interface
• Mailchimp - 2,000 subscribers and 12,000 emails/month free
• MailerLite - 1,000 subscribers/month, unlimited email free
• MailGun - First 10,000 emails per month are free
• Mailinator - Free, public, email system where you can use any inbox you want
• Mailjet - 6,000 emails/month free
• Mailkitchen - Free for life without commitment, 10,000 emails/month, 1,000 emails/day
• Mailnesia - Free temporary/disposable email, which auto visit registration link.
• Mailstache - 4 Mailboxes @ 1GB each for up to 2 custom domains.
• Mailtrap - Fake SMTP server for development, free plan with 1 inbox, 50 messages, no team member, 2 emails/second, no forward rules
• Migadu - Email Hosting (Webmail, SMTP, IMAP, ...) - free plan is limited to 10 outgoing mails/day
• Moosend - Mailing list management service. Free account for 6 months for startups
• Pepipost. - 30k emails free for first month, then first 100 emails/day free
• Phplist - Hosted version allow 300 emails/month free
• Postale - Free domain email addresses for up to 5 users per domain, unlimited domains, POP3/IMAP enabled, no ads
• Postmarkapp - 100 emails/month free, unlimited DMARC weekly digests
• Sender - Up to 15 000 emails/month - Up to 2 500 subscribers
• Sendgrid - 100 emails/day and 2,000 contacts free
• Sendinblue - 9,000 emails/month free
• SendLoop - 2,000 subscribers and 10,000 email delivery every month is free
• Sendpulse - 50 emails free/hour, first 12,000 emails/month free
• SimpleLogin - Open source, self-hostable email alias/forwarding solution. Free 5 Aliases, unlimited bandwith, unlimited reply/send. Free for educational staffs (student, researcher, etc).
• Socketlabs - 40k emails free for first month, then first 2000 emails/month free
• Sparkpost - First 500 emails/month free
• Substack - Unlimited free newsletter service. Start paying when you charge for it.
• Testmail - Automate end-to-end email tests with unlimited mailboxes and a GraphQL API. 100 emails/month free forever, unlimited free for open source.
• Tinyletter - 5,000 subscribers/month free
• Trashmail - Free disposable email addresses with forwarding and automatic address expiration
• Verifalia - Real-time email verification API with mailbox confirmation and disposable email address detector; 25 free email verifications/day.
• Verimail - Bulk and API email verification service. 100 free verifications/month
• Yandex.Connect - Free email and DNS hosting for up to 1,000 users
• Yopmail - Disposable email addresses
• Zoho.com - Free Webmail and collaboration for up to 5 users

CDN and Protection

• ASP - The Microsoft Ajax Content Delivery Network (CDN) hosts popular third party JavaScript libraries such as jQuery and enables you to easily add them to your Web application
• Bootstrapcdn - CDN for bootstrap, bootswatch and fontawesome.io
• Cdnjs - CDN for JavaScript libraries, CSS libraries, SWF, images, etc.
• Cloudflare - Basic service is free, good for a blog, it also offers a free SSL certificate service and 5 firewall rules.
• DDoS-Guard - Free CDN, DDoS protection and SSL certificate
• Developers Google - The Google Hosted Libraries is a content distribution network for the most popular, Open Source JavaScript libraries
• Fastly - Free CDN, all features until 50$/m is reached, enough for most, then pay or suspended.
• Jare - CDN for images. Uses AWS CloudFront
• Jsdelivr - CDN of OSS (JS, CSS, fonts) for developers and webmasters, accepts PRs to add more
• Microsoft Ajax - The Microsoft Ajax CDN hosts popular third-party JavaScript libraries such as jQuery and enables you to easily add them to your Web application
• Namecheap Supersonic - Free DDoS protection
• Netdepot - First 100 GB free/month
• Ovh - Free DDoS protection and SSL certificate
• PageCDN - Offers free Public CDN for everyone, and free Private CDN for opensource / nonprofits.
• pika.dev/cdn - The 100% Native ES Module JavaScript CDN
• Raw Githack - A modern replacement of rawgit.com which simply hosts file using Cloudflare
• Section - A simple way to spin up and manage a complete Varnish Cache solution. Supposedly free forever for one site
• Speeder - Uses KeyCDN. Automatic image optimization and free CDN boost. Free and does not require any server changes
• Staticaly - CDN for Git repos (GitHub, GitLab, Bitbucket), WordPress-related assets and images
• Surge - Zero-bullshit, single–command, bring your own source control web publishing CDN.
• Toranproxy - Proxy for Packagist and GitHub. Never fail CD. Free for personal use, 1 developer, no support
• Unpkg - CDN for everything on npm
• Web Support Revolution - Free CDN, backup, firewall, antivirus and monitoring.