Notes & Knowledge

Markdown-centric notes with optional E2EE sync and broad cross-platform clients.

Outliner + graph PKM with block references and plugin ecosystem.

Hierarchical note app with rich text, scripting, and optional self-hosted sync server.

PHP/Laravel wiki and documentation platform with books and shelves.

Knowledge ops with team authoring (Confluence-class positioning).

Lightweight memo hub with tagging and sharing.

Fast collaborative knowledge base (React/Node) with Slack SSO patterns.

Personal todo list web application.

End-to-end encrypted collaboration suite (docs, sheets, whiteboard).

Self-hostable read-it-later with tagging and full-text search.

Desktop journal with calendar navigation, tags, and templates—stores files locally.

Mind-mapping and knowledge organization tool evolved from FreeMind with scripting and filters.

BibTeX/BibLaTeX reference manager with DOI lookup, grouping, and LibreOffice integration.

Handwriting note-taking and PDF annotation with pressure-sensitive stylus support.

:bookmark: Personal mini-web in text

⚡️⚡️⚡️ Self-hosted collaborative bookmark manager to collect, read, annotate, and fully preserve what matters, all in one place.

Self-hosted bookmark manager that is designed be to be minimal, fast, and easy to set up using Docker.

A self-hostable bookmark-everything app (links, notes and images) with AI-based automatic tagging and full text search

Simple bookmark manager built with Go

Official Anytype client for MacOS, Linux, and Windows

There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, open-source, customizable and ready to use.

A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.

FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex question-answering systems without the

A personal knowledge management and sharing system for VSCode

Your One-Stop Publication Workbench

HedgeDoc - Ideas grow better together

A fully open source & end-to-end encrypted note taking alternative to Evernote.

Think fearlessly with end-to-end encrypted notes and files. For issues, visit https://standardnotes.com/forum or https://standardnotes.com/help.

Simplenote for Web, Windows, and Linux

Everything about note management. All in Zotero.

An open-source, self-hosted personal AI note tool prioritizing privacy, built using TypeScript .

Sketch and take handwritten notes.

An open source personal productivity platform built on Markdown, turbo charged with the scripting power of Lua

A pleasant note-taking platform in native C++.

CLI and local web plain text note‑taking, bookmarking, and archiving with linking, tagging, filtering, search, Git versioning & syncing, Pandoc conversion, + more, in a single portable script.

Collect your thoughts and notes without leaving the command line.

🌻 The collaborative editing software that runs Wikipedia. Mirror from https://gerrit.wikimedia.org/g/mediawiki/core. See https://mediawiki.org/wiki/Developer_access for contributing.

Wiki.js | A modern and powerful wiki app built on Node.js

Docmost is an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion.

Zotero is a free, easy-to-use tool to help you collect, organize, annotate, cite, and share your research sources.

CodiMD - Realtime collaborative markdown notes on all platforms.

A self-hosted, database-less note taking web app that utilises a flat folder of markdown files for storage.

LinkAce is a self-hosted archive to collect links of your favorite websites.

Fast and beautiful note-taking app written in C++. Write down your thoughts.

API Documentation Browser

Thinking notebook and Markdown editor.

The cross-platform open-source app built for handwriting

Notes manager for macOS/iOS

Just like TextEdit on Mac but dedicated to Markdown.