Porphyry

High performance file syncing and sharing, with also Markdown WYSIWYG editing, Wiki, file label and other knowledge management features.

Athens is no longer maintainted. Athens was an open-source, collaborative knowledge graph, backed by YC W21

Mobile first Note Taking integrated with Git

The knowledge tinkerer's notebook

Application for Mind Mapping, Knowledge Management, Project Management. Develop, organize and communicate your ideas and knowledge in the most effective way.

mrdoc,online document system developed based on python. It is suitable for individuals and small teams to manage documents, wiki, knowledge and notes. 觅思文档，适合于个人和中小型团队的在线文档、知识库系统。

Thinking notebook and Markdown editor.

A lightweight local-first graphic-centric productivity tool to build your second brain. Supporting Excalidraw/Tldraw whiteboard and notion-like note. 一款以图形为中心、轻量级、本地优先的用于构建第二大脑的效率工具。支持 Excalidraw、Tldraw 白板和类 Notion 笔记。

Ledge —— DevOps knowledge learning platform. DevOps、研发效能知识和工具平台，是我们基于在 ThoughtWorks 进行的一系列 DevOps 实践、敏捷实践、软件开发与测试、精益实践提炼出来的知识体系。它包含了各种最佳实践、操作手册、原则与模式、度量、工具，用于帮助您的企业在数字化时代更好地前进，还有 DevOps 转型。

小书匠是一款本地优先，去中心化，分布式，支持选择性同步的全平台覆盖知识管理笔记软件。