Compare software

OTS vs sup3rS3cretMes5age: catalog facts
OTS	sup3rS3cretMes5age
Free Free and open source under the Apache-2.0 licence.	Free Free and open source under the MIT licence.
Web, Self-hosted	Self-hosted, Command line
Encryption happens in the browser, so the server never sees plain text Secrets are deleted after the first read	Messages are deleted after one read Configurable expiry up to 7 days
In-memory storage loses secrets on restart Anyone who gets the link first can read the secret	Requires running a HashiCorp Vault instance No hosted public instance listed
Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License: MIT
No account needed	No account 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.