Logseq

Privacy-first, local-first outliner for networked notes and knowledge graphs.

Logseq is an open-source, local-first knowledge management and outlining tool that stores notes as plain Markdown/Org files and links them into a queryable knowledge graph. It supports bidirectional links, block references, a daily journal workflow, and a built-in Datalog query engine over your own data. It is a popular open alternative to Roam Research and Obsidian for personal knowledge bases.