OpenKnowledge is described as 'Beautiful markdown editor with integrations with Claude, Codex, and other harnesses. For knowledge bases, LLM wikis, specs, and notes. Private, local, and free' and is a Note-taking tool in the ai tools & services category. There are more than 50 alternatives to OpenKnowledge for a variety of platforms, including Mac, Windows, Linux, Android and iPhone apps. The best OpenKnowledge alternative is Obsidian, which is free. Other great apps like OpenKnowledge are Joplin, Logseq, Anytype and Notion.