Compare software

zk vs The Archive: catalog facts
zk	The Archive
Free Free to download and use from GitHub.	Paid Paid app with a 60-day free trial.
Command line	macOS
Notes stay as plain Markdown files Works with any text editor	Notes stored as plain Markdown text files Sync through any cloud storage folder
Command-line only, no graphical interface Assumes comfort with the terminal	macOS only Site lists compatibility up to macOS 14 Sonoma
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.