A curated list of free tools that are developer-friendly and easy to integrate to any application.
Every tool in this list is easy to integrate into any application. Therefore, the lists are separated by their pricing tiers.
See category.md for a list sorted by categories.
See queue.md for tools being reviewed to add to the list.
Free & Easy to Integrate
- 🎯 Easy to integrate into any app
- 💸 Either completely free or has a generous free tier
- 🧩 Drop-in with minimal config (CLI, SDK, GitHub Action, etc.)
- 🚀 Perfect for solo devs, MVPs, & indie hackers
| Site | Category | Description |
|---|---|---|
| ChatGPT | AI |
Conversational AI model for code and productivity tasks. |
| Claude | AI |
AI by Anthropic with a strong focus on ethical alignment. |
| DeepSeek | AI |
AI-powered search and assistant. |
| Google Gemini | AI |
Multimodal AI platform from Google for writing, coding, and image tasks. |
| Kandinsky 3 Playground | AI |
Image generator powered by Sberbanks Kandinsky diffusion model. |
| Mistral AI Playground | AI |
No-login playground to test Mixtral and other Mistral open LLMs. |
| NotebookLM | AI |
Google AI research assistant that answers questions about your uploaded docs. |
| Open WebUI | AI |
ChatGPT-style UI for interacting with local LLMs such as LLaMA and Mistral. |
| Qodo | AI |
AI programming partner. |
| Sourcegraph Cody | AI |
AI assistant for code navigation and refactoring (VS Code & CLI). |
| GoatCounter | Analytics |
Lightweight, privacy-respecting web analytics. |
| Hoppscotch | API |
Open-source API client for REST, GraphQL and WebSocket testing. |
| OpenAPI.Tools | API |
Directory of free tools for designing and testing OpenAPI specs. |
| Public APIs | API |
Searchable index of free public APIs with examples. |
| AWS Free Tier | Cloud |
Cloud services with always-free and trial tiers. |
| Google Cloud Free Tier | Cloud |
GCP services with free-tier access and generous trial. Look into the $$$ extras. |
| Microsoft Azure Free Tier | Cloud |
Microsoft cloud services with free quotas and credits. Look into the $$$ credit and extras. |
| Code Climate | Code Quality |
Automated code review and test coverage (Free for OSS). |
| Carbon | Design |
Convert code snippets to share-ready images. |
| Diagrams.net | Design |
Diagramming tool for flowcharts, architecture, org charts, and more. |
| Fontshare | Design |
Free, high-quality commercial-use fonts. |
| Haikei | Design |
SVG background generator for waves, blobs, gradients, and more. |
| Iconshock Free Bundle | Design |
Thousands of editable, royalty-free SVG/PNG icon sets. |
| Monaspace Fonts | Design |
Distinctive family of monospaced fonts by GitHub. |
| OpenPeeps | Design |
Hand-drawn vector illustration library for UI mock-ups. |
| Ray.so | Design |
Create beautiful code screenshots with customizable themes. |
| Astro | Development |
Static-site framework that ships zero JS by default. |
| DevDocs | Development |
Fast, searchable documentation browser with offline mode for 100-plus languages & APIs. |
| Docker | DevOps |
Container platform for building and deploying apps. |
| FileZilla | DevOps |
FTP client for transferring files to servers. |
| FreeFileSync | DevOps |
Folder comparison and synchronization tool. |
| Laragon | DevOps |
Local server for Windows. |
| PuTTY | DevOps |
Terminal emulator and SSH client. |
| Slack GitHub Action | DevOps |
Sends deploy, PR, or error notifications directly to your Slack. |
| Turborepo Cache | DevOps |
Free on Vercel, speeds up builds across monorepo packages. |
| WinSCP | DevOps |
SFTP, FTP, and SCP client for file transfer. |
| XAMPP | DevOps |
Local development environment for PHP and MySQL. |
| Klotho | DevTools |
CLI that converts application code into cloud infrastructure. |
| Responsively App | DevTools |
Browser to test websites across multiple viewports simultaneously. |
| Snippet Generator | DevTools |
Generate styled code-snippet images for sharing. |
| CloudFlare | DNS/CDN |
Global CDN, DDoS protection, DNS, and analytics. |
| ClouDNS | DNS/CDN |
Managed DNS hosting provider. |
| FreeCodeCamp | Education |
Full coding curriculum with certifications and projects. |
| Lark Email | Email |
Business email from the Lark Suite. |
| Amazon S3 | Hosting |
Static file storage and hosting with public access support. |
| Firebase Hosting | Hosting |
Google service to host and deploy static and dynamic content. |
| GitHub Pages | Hosting |
Free static site hosting directly from GitHub repos. |
| Netlify | Hosting |
Serverless web deployment with CI/CD, functions, and forms. |
| Surge | Hosting |
Static site publishing for frontend devs via CLI. |
| Vercel | Hosting |
Zero-config frontend deployment with CDN and preview URLs. |
| Cloud9 | IDE |
AWS-hosted online IDE. |
| CodeAnywhere | IDE |
Cloud IDE for remote teams and containers. |
| Eclipse | IDE |
IDE for Java and web development. |
| Google IDX | IDE |
Web-based AI-powered IDE by Google. |
| JetBrains IDEs | IDE |
Professional tools for web and enterprise languages. |
| Koding | IDE |
Cloud development environments (Free for OSS). |
| NetBeans | IDE |
Apache IDE for Java and other languages. |
| Visual Studio | IDE |
Full-featured IDE for Windows development. |
| VSCode.dev | IDE |
Browser-based version of VSCode. |
| VSCode | IDE |
Open source code editor from Microsoft. |
| Windsurf | IDE |
AI-powered coding experience by Codeium. |
| Certificates | Miscellaneous |
Free computer science certifications to showcase your knowledge. |
| Cyber Security University | Miscellaneous |
Free educational resources that focus on learning by doing. |
| Free for Developers | Miscellaneous |
A list of things that are free for Devs. |
| Free Programming Books | Miscellaneous |
Free books on programming for anyone. |
| Free Software | Miscellaneous |
Free software for anyone to use. |
| KDE | Miscellaneous |
A free software community dedicated to creating an open and user-friendly computing experience. |
| Open Source Supporters | Miscellaneous |
Companies that offer their tools and services for free to open source projects. |
| PocketBase | Miscellaneous |
An open-source, Go-based backend in one file. |
| Robotic Tooling | Miscellaneous |
Free and open tools for professional robotic development. |
| Tor | Miscellaneous |
A free overlay network for enabling anonymous communication. |
| Web Monetization | Miscellaneous |
A free open web standard service that allows you to send money directly in your browser. |
| Better Uptime | Monitoring |
Free uptime monitoring with email/SMS alerts and a hosted status page. |
| Coolify Status | Monitoring |
Open-source status-page dashboard for uptime and incident tracking. |
| Pingdom | Monitoring |
Uptime and performance monitoring. |
| Langfuse OSS | Observability |
Analytics & tracing platform for LLM apps (open source). |
| GTMetrix | Performance |
Website speed and performance reports. |
| PageSpeed Insights | Performance |
Google's tool for analyzing web performance. |
| WebPageTest | Performance |
Real browser-based performance testing. |
| CodePen | Playground |
Frontend design sandbox with live preview. |
| JSBin | Playground |
JS testing tool with live code sharing. |
| JSFiddle | Playground |
Live HTML/CSS/JS editor with preview. |
| Plunker | Playground |
Online community for creating and sharing web apps. |
| Runno Playground | Playground |
Runs C, Python, Ruby, Lua, etc. in-browser via WebAssembly. |
| Tana Packer | Productivity |
CLI to export Tana outlines to Markdown. |
| Calendly Embed | Scheduling |
Add meeting scheduling links or inline widgets with no backend. |
| 80Legs | Scraping |
Web crawling and scraping engine. |
| Abstract Web Scraping API | Scraping |
Structured web scraping API. |
| Dexi.io | Scraping |
Visual web scraping and data automation tool. |
| Import.io | Scraping |
Extract structured data from any website. |
| ParseHub | Scraping |
Extract data from websites using a visual builder. |
| Scraper (Chrome) | Scraping |
Chrome extension to extract structured data from web pages. |
| ScrapingHub | Scraping |
Cloud-based scraping platform. |
| Scrapy | Scraping |
Python framework for extracting data from websites. |
| Web Scraper (Chrome) | Scraping |
Chrome extension for site navigation and data scraping. |
| Webz.io | Scraping |
Web data crawling and scraping API. |
| CodeQL | Security |
GitHub-native static code analysis that catches security issues before they ship. |
| CryptoMator | Security |
End-to-end encryption for cloud storage. |
| Dependabot | Security |
Auto-updates dependencies and patches vulnerabilities in GitHub repos. |
| Let's Encrypt | Security |
Free automated TLS/SSL certificates. |
| Socket.dev | Security |
Real-time protection from malicious or hijacked npm packages. |
| HttpMaster | Testing |
HTTP testing and debugging tool. |
| Sauce Labs | Testing |
Cross-browser cloud testing platform. |
| Turborepo | Tooling |
High-performance build system for JS/TS monorepos. |
| Neobrutalism Components | UI Kit |
Brutalist Tailwind component library for landing pages. |
| OpenUI | UI Kit |
Community spec & resources for accessible custom elements. |
| Tails | UI Kit |
Library of modern Tailwind CSS components and templates. |
| Documenso | Utilities |
Open-source digital document-signing platform. |
| Mailtolink.me | Utilities |
Generate custom mailto: links with pre-filled fields. |
| SmallDev.tools | Utilities |
Online formatters, validators, and developer helpers—no signup. |
| Snapdrop | Utilities |
Browser-based AirDrop alternative for local file transfers. |
| AWS CodeCommit | Version Control |
Private Git hosting from Amazon Web Services. |
| Azure Repos | Version Control |
Git repos integrated with Azure DevOps. |
| BitBucket | Version Control |
Git solution from Atlassian, integrates with Jira and Trello. |
| GitHub | Version Control |
Code hosting platform with collaboration, CI/CD, and issue tracking. |
| GitLab | Version Control |
Full DevOps lifecycle tool, Git hosting and pipelines. |
| Site | Category | Description |
|---|---|---|
| Replit Ghostwriter | AI |
Coding assistant inside Replit IDE; Starter plan free for 3 public projects. |
| Formbricks | Analytics |
Surveys & product feedback; unlimited surveys, 1 000 responses/mo free. |
| Plausible Cloud | Analytics |
Free for sites under 10k monthly page views. |
| PostHog Cloud | Analytics |
Event tracking, feature flags, and product analytics. |
| Repohistory | Analytics |
GitHub repo analytics tool; Free for tracking one repo. |
| Auth0 | Auth |
Authentication/authorization platform. |
| Hookdeck | Automation |
Webhook ingestion platform; 100 000 monthly events on the dev tier. |
| Pipedream | Automation |
Serverless workflows with 100 000+ monthly executions free. |
| LemonSqueezy | Billing |
Free until you earn revenue (fees only on transactions). |
| Stripe | Billing |
No platform fee, pay only transaction costs. |
| LottieFiles | Design |
JSON animation marketplace/editor; free unlimited previews and basic editing. |
| StackBlitz | Development |
Browser IDE; unlimited public projects & repos on free plan. |
| Pinggy | DevTools |
Instant public URLs & tunnels to localhost; unlimited free bandwidth. |
| Mintlify Writer | Documentation |
AI documentation editor; hobby plan free for 1 user & custom domain. |
| Mailersend | Email |
3,000 free emails/month with analytics and templates. |
| Resend | Email |
Send up to 3,000 emails/month on the free tier. |
| Highlight.io | Monitoring |
Session replay, error tracking, and logging in one SDK. |
| Sentry | Monitoring |
Catch and triage frontend/backend exceptions. |
| Vercel Analytics | Performance |
Track real-user metrics like TTFB, CLS, and LCP. |
| SimpleLogin | Privacy |
Create up to 15 email aliases to hide your real address. |
| Crisp Chat | Support |
Free live chat widget with a shared inbox. |
Badges are a free easy way to enhance README.md files and attract contributors. Here is a compilation of some you can use in your project.
Self-Hosted options are no longer listed. - Visit the Awesome Self-Hosted Repo or their website for more self-hosted options.
Maintaining this project requires a lot of time. Donate to support me! ❤️
I am just getting into Open Source, so please go check out my work
Want to add something to the list? Check -> contributing.md
If you want to become a maintainer, then do so here.
- @mathewlewallen - Creator.
- @A-4-Atom - Maintainer.
