Lithic PKMS is described as 'Lithic is a bespoke Personal Knowledge Management System (PKMS) built on the powerful TiddlyWiki engine, re-engineered for a modern academic and engineering workflow. It bridges the gap between the database flexibility of TiddlyWiki and the rapid, outlining experience of Logseq' and is a Note-taking tool in the office & productivity category. There are more than 25 alternatives to Lithic PKMS for a variety of platforms, including Windows, Mac, Android, iPhone and Linux apps. The best Lithic PKMS alternative is Obsidian, which is free. Other great apps like Lithic PKMS are Joplin, Logseq, Anytype and Notion.