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Every entry includes where it came from, honest pricing, and exact steps to install or use it.
91 tools matching “free”
Tencent's open-source LLM knowledge platform — turn team docs into a queryable RAG base with cited answers.
Self-hosted PaaS — deploy apps, databases and 360+ one-click services on your own servers. You pay only for your server.
Open-source API development ecosystem — REST, GraphQL, WebSocket, SSE, MQTT — in the browser, desktop, CLI or self-hosted.
Offline-first, Git-native API client (REST, GraphQL, gRPC, WebSocket). Collections are plain-text .bru files — no cloud.
Run MCP servers as isolated Docker containers from the signed catalog, behind one gateway endpoint. Needs Docker.
Production-ready MCP server for real-time web search, extraction, site mapping and crawling. Needs a Tavily API key.
Notion's official hosted MCP server — semantic search and Markdown read/edit across your workspace, via OAuth.
Firecrawl's context API for MCP clients: search, scrape, crawl, map, parse PDFs and more — 29 tools in one server.
Turns any GitHub repo into a remote MCP documentation hub, so agents get up-to-date docs instead of hallucinating APIs.
MCP toolkit giving coding agents IDE-level semantic code retrieval, editing and refactoring across 40+ languages.
Token usage and cost reports from local data for 19 coding-agent CLIs — daily/weekly/monthly, billing blocks, JSON export.
Anthropic's official GitHub Action — Claude Code answers @claude mentions, reviews PRs, implements fixes and triages issues in your repos.
A free local plugin that sandboxes tool output and gives the agent only the part it asks for — median reply 99.4% smaller.
Offline, privacy-first English grammar and spell checker in Rust: under-10ms suggestions, editor and browser extensions.
No-code form builder: drag-and-drop builder, unlimited forms and submissions, file uploads and integrations — self-hostable.
Python CLI/library wrapping faster-whisper: batched ASR, word-level timestamps and speaker diarization — free, open source.
Open-source screen recorder for macOS, Windows and Linux: Instant Mode that shares on stop, plus local 4K/60 Studio editing.
Open-source omnichannel support desk: one shared inbox for live chat, email and WhatsApp — free Community Edition.