Free for Developers
Contents
Source Code Repos
Testing
A Dashboard for publishing automated test results and a Framework for implementing manual tests as code using GitHub. The service is free for Open Source and accounts for 450 monthly results.
A Dashboard for publishing automated test results and a Framework for implementing manual tests as code using GitHub. The service is free for Open Source and accounts for 450 monthly results.
Test your Android & iOS apps on this Cloud Based Android Phone / Tablets emulator and iPhone/iPad simulators directly in your browser. The free tier includes two concurrent session with 30 minutes of usage per month. No limit on app size.
Open Source visual testing for developers. Unlimitedprojects, with 5,000 screenshots per month. Free for open-source projects.
A continuous benchmarking tool suite to catch CI performance regressions. Free for all public projects.
Lightweight test automation tool for web applications. It is easy to learn and doesn't require coding. You can run unlimited tests on your own computer for free. You also get cloud monitoring and CI/CD integration for an additional monthly fee.
Browser extension that tests if your website follows 50+ SEO, speed and security best practices. Free tier for smaller websites.
API health monitoring with Silent Failure Detection — validates response body via JSON Path assertions and regex, not just HTTP status codes. Free plan includes 10 monitors, 5-minute intervals, all 5 alert channels (Email, Slack, Telegram, Discord, Webhook), and is free for commercial use with no time limit.
Code-first synthetic monitoring for modern DevOps. Monitor your APIs and apps at a fraction of the price of legacy providers. Powered by a Monitoring as Code workflow and Playwright. Generous free tier for devs.
A free tool for developers and API testers to check if an API is CORS-enabled for a given domain and identify gaps. Get actionable insights.
Fast, easy and reliable testing for anything that runs in a browser. Cypress Test Runner is always free and open-source with no restrictions and limitations. Cypress Dashboard is free for open-source projects for up to 5 users.
Records and replays all steps made in a web browser and creates scripts, free with fewer options
Selenium Grid testing with a free plan of up to 4 simultaneous selenium nodes/10 grid starts/4,000 test minutes/month
Provides a testing platform that can help teams of all sizes at different levels of testing maturity, including Katalon Studio, TestOps (+ Visual Testing free), TestCloud, and Katalon Recorder.
Keploy is a functional testing toolkit for developers. Recording API calls generates E2E tests for APIs (KTests) and mocks or stubs(KMocks). It is free for Open Source projects.
Automatically create API and load tests by analyzing network traffic. Simulate up to 50 concurrent users for up to 60 minutes for free monthly.
holistic visual regression testing for your Storybook, Ladle, Histoire stories and Web Apps. Unlimited team members, totally free for open-source, 7,000 snapshots/month.
Load behvariour and page speed analysis and optimization tool. The free plan provides 10 tests per day, 5 experiments per week, and 15 GB of maximum ingested data per month.
Add visual testing to any web app, static site, style guide, or component library. Unlimited team members, Demo app, and unlimited projects, 5,000 snapshots/month.
Test management system for Dev and QA teams. Manage test cases, compose test runs, perform tests, track defects, and measure impact. The free tier includes all core features, with 500MB available for attachments and up to 3 users.
No-code mobile app test automation tool built on top of computer vision and AI. Works for native apps, flutter, react-native, web, ionic, and many more app frameworks. The free plan is limited to 10 tests for iOS and 10 for Android, but includes most of the features of the paid plans, including unlimited test runs.
Open-source Chrome Extension to Intercept, Redirect and Mock HTTP Requests. Featuring Debugger, Mock Server, API Client and Session Recording. Redirect URLs, Modify HTTP Headers, Mock APIs, Inject custom JS, Modify GraphQL Requests, Generate Mock API Endpoints, Record session with Network & Console Logs. Create upto 10 rules in Free Tier. Free for open-source.
Free on-page SEO website tester. 10 free website crawls per day. Useful SEO learning resources and recommendations on how to improve the on-page SEO results for any website regardless of technology.
It's like CodePen but for cross-browser testing. UI-licious lets you write tests like user stories and offers a free platform - UI-licious Snippets - that allows you to run unlimited tests on Chrome with no sign-up required for up to 3 minutes per test run. Found a bug? You can copy the unique URL to your test to show your devs exactly how to reproduce the bug.
Check SSR (server-side rendering) for any URL by visually comparing the server rendered version of the page with the regular version.
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 projects.
Capture and inspect webhooks from your browser. Forward to localhost, or replay from history. Free to use.
Build scalable UIs in Java or TypeScript, and use the integrated tooling, components, and design system to iterate faster, design better, and simplify the development process. Unlimited Projects with five years of free maintenance.
Debug and inspect webhooks and HTTP requests with a unique URL during integration. Completely free, you can create unlimited URLs and receive recommendations.
Verify webhooks, outbound HTTP requests, or emails with a custom URL. A temporary URL and email address are always free.
A web UI automation tool that functions without the need for selectors. Every developer gets 500 actions per month for free.
A free tool from Microsoft to run automated tests in production and create tests from production user behavior. Supports unit tests, UI tests, and API tests.
Security and PKI
A simple, intuitive web app for analyzing and decoding/encoding data without dealing with complex tools or programming languages. Like a Swiss army knife of cryptography & encryption. All features are free to use, with no limit. Open source if you wish to self-host.
Keep secrets out of your source code with automated secrets detection and remediation. Scan your git repos for 350+ types of secrets and sensitive files – Free for individuals and teams of 25 developers or less.
Free secure email account service provider with built-in end-to-end encryption, no ads, no tracking. Free 1GB storage, one calendar (Tuta also have an paid plan.). Tuta is also partially open source, so you can self-host.
Open-source anonymous email forwarding, create unlimited email aliases for free
Block disposable emails, catch typos, and validate MX records via a simple API. 100 free requests/month.
Free temporary/disposable email inbox, with up to 3-day email auto-deletes. Open source and can be self-hosted.
Open source, self-hostable email alias/forwarding solution. Free 10 Aliases, unlimited bandwidth, unlimited reply/send. Free for educational staff (student, researcher, etc.).
Free email infrastructure grader that checks SPF, DKIM, DMARC and mail server configuration. Scores any domain out of 100. No signup required.
Free email forwarding for custom domains. Create and forward an unlimited amount of email addresses with your domain name (note: You must pay if you use .casa, .cf, .click, .email, .fit, .ga, .gdn, .gq, .lat, .loan, .london, .men, .ml, .pl, .rest, .ru, .tk, .top, .work TLDs due to spam)
Generative AI
Evaluate, test, and ship LLM applications across your dev and production lifecycles.
Open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications. Free forever plan includes 50k observations per month and all platform features.
A LLMOps platform helping AI teams measure, monitor, and optimize LLM applications for reliability, cost-efficiency, and performance. With a powerful DSPy component, we enable seamless collaboration between engineers and non-technical teams to fine-tune and productionize GenAI products. Free plan includes all platform features, 1k traces/month and 1 workflow DSPy optimizers.
An AI-native fast, simple, and secure alternative to popular business intelligence solutions like Tableau, Power BI, and Looker. Othor utilizes large language models (LLMs) to deliver custom business intelligence solutions in minutes. The Free Forever plan provides one workspace with five datasource connections for one user, with no limits on analytics.