Logseq

Logseq is a privately held, open-source software company based in New York, founded in 2020.

The company develops a privacy-first, local-first knowledge management and note-taking application that allows users to store data locally in plain-text Markdown and Org-mode files. Logseq's mission is to create a new World Knowledge Graph, enabling users to query data in natural language while ensuring they retain full ownership of their information. The Logseq application serves as a personal knowledge base, featuring a block-based outliner and task manager. Key features include local data storage, support for Markdown and Org-mode syntax, graph-based organization of notes, task management tools, and the ability to annotate PDFs. The software is open-source and encourages community contributions, making it a valuable resource for developers, academics, and privacy-conscious users looking to organize complex information effectively.