Lockbook is an open-source notebook for Markdown notes and drawings, encrypted on your device
and shared only by invitation. Notes are Markdown files and drawings are SVGs, kept in ordinary
folders. Open them in any other app and you'll find nothing missing.
Your notes are encrypted on your device, so no one else can read them, not even us. Sign up
with just a username: we never ask for an email, a phone number, or a name.
- Type punctuation and watch plain text turn into headings, lists, tables, and code
- Sketch, handwrite, and diagram on an infinite canvas
- Mention one note in another and see which notes mention it back
- Find a note by its name or by what's in it, privately and offline
- Keep photos, PDFs, and everything else worth keeping
- Share any note or folder with read or write access
- Edits sync without being dropped, duplicated, or clobbered
- Also on Windows, Mac, iPhone, iPad, and Android
