Open Source Knowledge Management Apps

A local-first, end-to-end encrypted knowledge OS that lets you build notes, tasks, wikis, and entire apps — with your data stored offline and synced peer-to-peer.

A self-hosted, AI-powered card note-taking tool that lets you capture fleeting thoughts instantly and retrieve them with natural language search.

Local-first, self-hosted workspace that combines real-time chat, Notion-style pages, and structured databases — all synced via CRDTs so you work offline without losing a keystroke.

A local-first monorepo led by Whispering, an open-source speech-to-text app, built on an MIT toolkit that turns your data into plain Markdown and SQLite files you own instead of a database you rent.

A private, self-hosted bookmark manager built for large collections—nested tags, PWA support, and zero cloud dependency.

Self-hosted, database-free note-taking with plain Markdown files, full-text search, wikilinks, and zero proprietary lock-in.

Self-hosted RSS reader and personal knowledge management tool with MCP server integration for AI assistant connectivity.

A self-hostable AI second brain that chats with your documents, searches the web, builds custom agents, and runs entirely on your own LLM.

Self-hosted collaborative bookmark manager that captures full-page archives, enables annotation, and keeps your knowledge accessible forever.

A privacy-first, open-source knowledge graph platform combining Markdown, Org-mode, bidirectional linking, and local-first storage for building your second brain.

Local-first note-taking with graph view, canvas & AI plugins—your Markdown files, zero telemetry, blazing-fast Rust performance.

Build enterprise-grade AI agents with RAG, workflows & multi-modal support

Capture anything first, then let AI transform your scattered records into polished, structured Markdown notes with RAG-powered knowledge retrieval.

A self-hosted markdown knowledge base with MCP-powered AI integration, graph views, LaTeX math, and built-in drawing — your notes stay on your server, forever.

Self-hosted read-it-later platform with highlights, newsletters, PDFs, and seamless Obsidian and Logseq integration.

Self-hostable AI platform with agentic RAG, 50+ connectors, deep research, code execution, and support for every major LLM provider.

An open-source CLI that compiles raw documents into a structured, interlinked wiki-style knowledge base using LLMs — powered by vectorless, reasoning-based retrieval (PageIndex) instead of a vector database.

A fast, real-time collaborative knowledge base for growing teams built on React, Node.js, and ProseMirror.

A modern, self-hosted wiki platform built on Node.js with a rich plugin ecosystem for authentication, search, storage, and rendering that adapts to any team's infrastructure.