Top NOTE-TAKING GitHub Repositories & Tools (2026)

Open-source, self-hosted note-taking tool built for quick capture. Markdown-native, lightweight, and fully yours.

🔥 PlainApp is an open-source app that lets you securely manage your phone from a web browser. Access files, media, contacts, SMS, calls, and more through a simple, easy-to-use interface on your desktop.

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

Open-source, AI-native knowledge base & Evernote alternative with native MCP. Zero-cost on Cloudflare or Docker.

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

Your web application for managing personal data.

Powerful note-taking without the hassle.

End-to-end encrypted notes, tasks, files, passwords, journal and bookmarks. Keyed by a 12-word BIP-39 phrase: no email, no password, no account to leak. The full client source for web, desktop and mobile is published, along with the encryption (XChaCha20-Poly1305, HKDF-SHA256, Ed25519) and the threat model, so the privacy claims are falsifiable.

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

Minimalistic note taking: save and edit your clipboard content as a note file (Gitlab mirror)

The best way to publish your scientific knowledge. Source code for the entire OurBigBook Project: OurBigBook.com, ourbigbook CLI and the VS Code extension. A powerful static wiki generator and lightweight markup language to write complex structured wikis/books/blogs with multi-user mind-melding magic 🧙

Lightweight Knowledge Base and Feed Reader.

Your Self-Hosted Knowledge Base