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Picocrypt vs hat.sh: catalog facts
Picocrypt	hat.sh
Free Free and open source, no longer developed.	Free Free to use in the browser; the project is open source.
Windows, macOS, Linux	Web
XChaCha20 and Argon2id, with a design deliberately small enough to audit Standalone portable executable on Windows, with no installation	Encryption and decryption happen locally in the browser Nothing to install
Permanently archived and read-only since September 2025; there will be no more releases Encrypts individual files, not partitions, drives or cloud folders	Research gives little detail on algorithms or file size limits Depends on a modern browser
Downloadable app	Web application
Open source	Open source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 24, 2026

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