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