Knowledge Base GitHub Repositories (2026) · Open Source Tools

Local AI-powered document search and editing with first-in-class hybrid retrieval, LLM answers, WebUI, REST API and MCP support for AI clients.

A new SOTA for RAG — an original retrieval architecture and an open-source knowledge base for humans and agents.

A minimal, extensible, agent-native knowledge repository that keeps shared context current and inspectable

Open Source Implementation of Karpathy's LLM Wiki. Upload documents, connect your Claude account via MCP, and have it write your wiki !

The open-source collaboration system for people and AI agents. Share context, coordinate tasks, and work in parallel with your team, cloud agents, Codex, Claude Code, Grok, Grok Bot, OpenCode, Antigravity, and Cursor.

A Easy way to create your own Knowledge-base! Notemd enhances your Obsidian workflow by integrating with various Large Language Models (LLMs) to process your notes, automatically generate wiki-links for key concepts, create corresponding concept notes, perform web research, and more.

The Stack Overflow clone for your team (self-hosted or hosted)

Free, open-source alternative to ChatGPT Spaces: a self-hostable AI workspace for shared pages and conversations.

Lightweight Knowledge Base and Feed Reader.

Logic Language for World Models 🌱🐋🌍

MindOS is a Human-AI Collaborative Mind System, where human thinks and agents act. Globally sync your mind for all agents: transparent, controllable, and evolving symbiotically.

Persistent memory for LLMs and apps. Content-addressed storage with dedupe, compression, full-text and vector search.

Open-source, local-first AI agent for coding and real work. BYOK models, MCP, skills, plugins, workflows, and private knowledge bases.

An open‑source technical wiki connected to the systems it describes

An open-source knowledge base of defensive countermeasures to protect AI/ML systems. Features interactive views and maps defenses to known threats from frameworks like MITRE ATLAS, MAESTRO, and OWASP.

The open-source workspace for people and AI agents. Docs, databases and realtime collaboration with an MCP server in the same binary, so agents work in the same workspace on the same permissions. One Go binary, one SQLite file, self-hosted.

The Context Layer for unstructured data: typed, versioned datasets over S3, GCS, Azure

Star if Papyra keeps your notes yours! A self-hosted, Google Keep-style notes app where every note is a plain Markdown file on your disk. Live collaboration, passkeys, encrypted locked notes, full-text search and one-container Docker setup. Crafted with 💗 for people who want their notes without lock-in.

Git-backed shared memory for AI agent fleets: searchable knowledge base, incident and task tracking, every write versioned and attributed. CLI, HTTP API and MCP server.

The AI-assisted, open-source alternative to Notion and Confluence: a team wiki that lives in Git, with real-time editing, data tables, whiteboards, offline mode, and first-class AI agents. Live demo: https://demo.foliowiki.online