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plumio vs Note Mark: catalog facts
plumio	Note Mark
Free Free and open source under the AGPL-3.0 licence, with no subscriptions.	Free Free and open source; the developer accepts donations.
Web, Self-hosted	Web, Self-hosted
Quick Docker Compose deployment Document encryption for notes	Minimal and fast web interface Self-hosted, so notes stay on your server
Smaller project with a modest user base Needs a server to run on	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: AGPL-3.0	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 October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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