Knowledge Base GitHub Repositories (2026) · Open Source Tools

Graphs that teach > graphs that impress. Turn any code into an interactive knowledge graph you can explore, search, and ask questions about. Works with Claude Code, Codex, Cursor, Copilot, Gemini CLI, and more.

A markdown editor — and the bridge to your LLM. Local-first, MIT, ~15 MB. Bundled MCP server lets Claude Code / Codex / Cursor drive your vault directly. 14 AI providers BYOK.

Your Personal Librarian Agent. Ask anything on your computer, organize files, remember important info and files.

Open-source, self-hosted AI platform (PHP/Symfony): chat with any model, RAG over your docs, embeddable widget, MCP — see the cost of every answer. Apache-2.0.

A privacy-first, open-source platform for knowledge management and collaboration. Download link: http://github.com/logseq/logseq/releases. roadmap: https://logseq.io/p/NX4mc_ggEV

The cross-harness, self-improving memory layer for AI agents. Join our community: https://discord.com/invite/zdNChS2fBu

AI-native knowledge base & Evernote/Obsidian alternative. Instant all-platform sync, rich notes (tables, mind maps, diagrams, posters), web clipper & MCP. 100% free on Cloudflare or Docker.

A lightweight knowledge base for people and agents, with ultra fast indexing and most precise retrieval.

Framework for AI agents to build and maintain a digital brain through Obsidian wiki | Memory System for Agents

World's first open-source enterprise world model.

Beautiful, AI-native markdown IDE and LLM wiki

Build your personal knowledge base with Trilium Notes

Open-source, self-hosted customer support desk in a single binary. A lightweight alternative to Intercom, Zendesk, Chatwoot.

Capture first. Organize later. A local-first Markdown app that turns scattered records into clear notes with AI.

Git-native persistent memory for AI coding agents. Implements Google OKF v0.2 with sub-300µs in-memory BM25 search, embedded MCP server, and progressive disclosure. Slashes token bloat by 80% with zero external databases or dependencies. Built in pure Go.

Kition brings Markdown, DataTable, WhiteBoard, a tool-using AI agent, browser research, and visual workflows into one desktop workspace.

The Governance Platform for Agents, Knowledge, and Context

A free, open-source developer workspace. Snippets, notes, HTTP requests, calculations, and dev tools in one local-first app.

Open-source AI customer support system. AI-first support, human-ready operations.

Your Self-Hosted Knowledge Base