A notebook with two kinds of page. Numbered lines when your thinking has an order — an open board when it doesn't. Everything saves as ordinary files on your own disk.
Or try it in your browser — no install, no account.
One Mac build for every Mac ·
first-launch instructions
Chosen per sheet, and reversible at any time. The header of every sheet has the switch.
Numbered lines, real syntax highlighting, find and replace, multi-cursor.
Name a sheet deploy.sh or main.c and it saves as
exactly that — so you can edit scripts in place and paste them straight back.
An open board. Drop text wherever it belongs, drag it around, paste in screenshots. For the stage where the thinking hasn't found its order yet.
No lock-in, no account required, nothing held hostage in a proprietary format.
Markdown, scripts, JSON boards, images in a folder. Readable with or without 3-lance.
No sign-up, no server, no network. An account is optional and adds only a backup.
Type [[double brackets]] to link a sheet. Backlinks appear beside it.
Press ⌘R to run a sheet with the languages you have installed. Setting up languages →
Highlight any passage, right-click, and it becomes a dated entry — with reminders, repeats, and a link back to the note.
Entries go to iCloud automatically the moment you make one — or hand them to Google and Outlook in a click.
Not hidden — encrypted. AES-256 with a passphrase only you hold. No recovery, by design.
Send an encrypted link. The key lives in the URL, never on the server, so we can't read it either.
Right-click a selection to leave a note about it. Stored beside the file, never inside it.
Screenshots land as real image files next to the board, not as bloat inside it.
Import notes and folders from your Mac, PC, iCloud Drive or OneDrive.
Sign in to keep sheets on every device. Your local copy is always the real one.
3-lance isn't code-signed yet, so both systems will want a word with you the first time. This is the standard hurdle for independent software — here's how to get past it.
Free, offline, and yours. Your notes never leave the machine unless you ask them to.