Compare software

flatnotes vs Note Mark: catalog facts
flatnotes	Note Mark
Free Free to self-host from the public GitHub repository.	Free Free and open source; the developer accepts donations.
Web, Self-hosted	Web, Self-hosted
No database; notes are plain Markdown files Flat folder storage is easy to back up or sync	Minimal and fast web interface Self-hosted, so notes stay on your server
Requires running your own server Flat folder structure offers little hierarchy for large collections	You need to run and maintain your own server Smaller feature set than larger note platforms
Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it 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 October 2, 2026

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