About Octo

Octo is a local-first knowledge management app aimed at deep work. It is a cross-platform, offline-first web app where documents are plain text with hybrid rendering, so you write in a simple format and see it rendered as you go.

Features include dark and light themes, automatic syntax highlighting for code blocks, keyboard navigation and shortcuts, optional Vim mode, tabs for recent docs, full-text search with exact match or regular expressions, organization with plain-text hashtags and workspaces, drag-and-drop or paste file attachments, and optional end-to-end encryption.

Octo is built with Vue and licensed under MPL-2.0. You can start for free at octo.app, and the project is funded by sponsors through platforms such as GitHub Sponsors and Open Collective. Its topics include privacy-first and second brain, and it suits people who want a private personal notes system.