Open Source Tools
1109 best Open Source tools and apps, curated and ranked by community upvotes on ProductCool. Updated daily as new Open Source products launch.
You built an app with Claude Code or Cursor and want it online. Run sitesolide deploy in its folder and it goes live on your server, on HTTPS, at its own address. Each app is isolated from the others, and you choose who can open it. Free and open source (MIT): you pay for the server and a domain.
A fast open-source browser agent. It reads every button, link and field on the page and has a System One model (ex: jev) pick the next step from that list. If it's unsure, it falls back to a standard model model. Fast, cheap, and every answer provides a citation.
XWiki MCP Server is an open-source, self-hostable extension that connects XWiki to the AI agent of your choice: OpenCode, Pi, Codex, Claude Code, GitHub Copilot, and more. You can already use the extension to query your knowledge base to get answers, create and edit pages, and work with structured data directly in XWiki. Try out the extension and let us what's should we improve next!
Arco is a free, open-source Codex plugin for managing GitHub and Linear issues. You can - View issues in chat, in a side panel, or full screen. - Create, close, and reopen issues. - Add comments. - Select passages from issues and add them to your next Codex prompt. Arco runs locally on your machine. No server hosting required🎻
Your agent knows Kubernetes. It doesn't know your cluster. Radar (open-source) gives it context over MCP: ranked issues, a change timeline, logs and owners in one view. New: click Investigate on a failing workload. Claude Code, Codex or Cursor finds the root cause, read-only, with evidence for each claim. In our benchmark of 50 live faults across six tools, Radar found the most root causes. Radar Cloud investigates every alert and posts findings to Slack.
Run open-source apps on a server that's only yours, without per-seat fees. Pick one of 105 apps and a region, see the exact price, and a few minutes later it runs on its own server with a web address, TLS certificate and nightly encrypted off-site backups. Add your own domain, update, resize or move region from the dashboard. You pay for the server by the hour, capped monthly. The price follows the server, not your headcount.
Mudroom runs Claude Code, Codex, Gemini CLI and other agents in a Linux sandbox on a copy of your project, behind a network allowlist. Review the diff like a PR and apply only what you want, with undo. Mac app, plus a CLI for Linux and Windows. Free, MIT.
A free, open-source CLI that checks every dependency license, transitive ones included, against your project's license, in 10 ecosystems. It reads lockfiles and registry metadata, installs nothing, and gives CI a verdict, not a list.
Yardlet is a free, open-source Mac app for the coding agents you already use. It starts Codex, Claude Code, OpenCode and others with their own CLI and sign-in, and gives them one sidebar, composer and set of approval cards. Sessions stay in each agent's own store, so a task started in Yardlet also opens in the Codex app. It writes nothing into the agents' configuration, so you can stop using it any time. Diffs, a pull request tab, connectors and a browser the agents drive come with it.
RageLayer is an Easter egg for your own site. Visitors pick a hammer, fire, chainsaw, or black hole and wreck the real page: text and cards break into physical debris, effects interact (water puts out fire), and a broom sweeps everything back. 15 tools. Works with React, Vue, Svelte, or plain HTML. Free, MIT, TypeScript, zero runtime dependencies, plus an SDK for custom tools. Play with the live demo first.
Hob is a free, open-source AI app for Mac, Windows and Linux that works with your files the way ChatGPT and Claude do, except the AI runs on your own computer. It picks the best open model your computer can run and sets it up for you. Hob can read and edit files in folders you choose, turn spreadsheets into charts, fill in PDFs, look at photos and search the web. Your chats and files stay on your computer, and it works offline.
Trigger.dev Webhooks let you build AI agents on top of the services your customers already use, like Slack, Supabase and Stripe. A GitHub pull request can start a code review agent, a new Sentry issue can start an agent that writes the fix, and a Stripe refund can wait for a human to approve it in Slack.
New in 1.0: decision models next to LLMs. They answer closed questions with the probability of each answer, fast and at a low cost, and a model group sends each question to the model that suits it. Also new: Docling for your files, and tools for agents.
Paddock gives each AI agent its own Linux computer or a locked-down sandbox, on one VPS you own. Free and open source, MIT licensed.
Off Grid AI runs AI models on the phone and computer you already own. Chat, read documents, ask about photos, talk out loud and make images, with the Wi-Fi off and no account. On your computer it remembers your day: meetings transcribed with no bot in the call, answers that cite their source, and replies it drafts but only sends after your yes. Your phone can use your Mac's bigger models, device to device. Free and open source on iOS, Android, macOS, Windows and Linux.
Rooftop solar apps make you dig for the one number you want: units made today. Helio opens straight on it, read from your inverter's own energy counter via ShineMonitor / SmartClient. Also: live power, any past day as a 5-minute curve, 30-day, yearly and lifetime history, and savings in your own currency and tariff. Deploy your own copy to Vercel in 5 minutes. Free, MIT licensed, no database, no tracking. Your login never reaches the browser.
Catchenv secrets leaking into git: a pre-commit hook and CLI that fails when an API key or any value of your env files is staged, tracked or anywhere in the history. Your real values, not patterns.
Free Figma alternative made on Rust. Contribute to deepfounder-ai/desigma development by creating an account on GitHub.
Most ADEs bring the browser into the IDE. tabsh takes the opposite approach: bring coding sessions to your browser, where your work already happens. It's a small Rust daemon that puts all your sessions across projects on one Kanban board/list, with status updates via agent hooks. Use real terminals or chat panels with Claude Code, Codex, Cursor CLI, OpenCode, and more. Free, MIT-licensed, macOS/Linux.
Yourcast is a Telegram bot for podcasts: search a show, tap to subscribe, and new episodes arrive as audio right in your chat. 2.0 adds AI summaries with timestamps you can tap to jump in the audio, questions about any episode, feeds that repair themselves, files up to 2 GB, OPML import and payments in Telegram Stars. Free: 10 episodes a week on demand. Open source (GPL v3). In English, Russian, Portuguese, Spanish, German and Hebrew.
Llama Windows brings llama.cpp to the Windows 11 system tray. Download open models from Hugging Face in one click, chat via Alt+Space, and let coding agents, editors and scripts share a local OpenAI-compatible API and model cache. Free and open source.