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Hemmelig vs Yopass: catalog facts
Hemmelig	Yopass
Free The hosted service at hemmelig.app can be used free of charge; the code is under the…	Free Free and open source to run yourself.
Web	Web, Self-hosted
Client-side encryption of shared secrets Messages self-destruct after being read	End-to-end encrypted secret sharing Links self-destruct after use or expiry
Source-available O'Saasy licence, not OSI open source Little documentation of features was available in the research	Needs a server to host it yourself Built for short secrets rather than general file sharing
Web application	Self-hosted
Closed source	Open source
License: O'Saasy	License: Apache-2.0
Not stated if an account is needed	No account needed
Needs internet	Needs internet
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.