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Hemmelig vs PrivateBin: catalog facts
Hemmelig	PrivateBin
Free The hosted service at hemmelig.app can be used free of charge; the code is under the…	Free Free and open source; you run it on your own server.
Web	Web, Self-hosted
Client-side encryption of shared secrets Messages self-destruct after being read	Pastes are encrypted in the browser with AES-256-GCM Server operator cannot read stored pastes
Source-available O'Saasy licence, not OSI open source Little documentation of features was available in the research	Users must trust the administrator not to serve malicious code Requires HTTPS, and ideally HSTS, to be safe
Web application	Self-hosted
Closed source	Open source
License: O'Saasy	License not stated
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.