Obsidian Alternative GitHub Repositories (2026) · Open Source Tools

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.

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.

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

⛷ A light, native Markdown notebook for Mac, iPhone and iPad.

Koru is an open-source, local-first workspace for managing notes, documents, tasks, and collaborating with AI agents. Work offline and sync securely across devices using encrypted P2P, self-hosted sync (free, coming soon) or optional cloud sync (paid)

Local-first like Obsidian, polished like Notion. Free & open source: wiki links, slash commands, to-dos, local or cloud sync, and MCP for AI. Web + Mac.

One private place for everything on your mind. Capture it, write it, plan it. Notes, tasks, inbox and journal, end-to-end encrypted.

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.