Recommendations — The Privacy Raccoon

https://an_g6.codeberg.page/

to manage "encrypted directories", called tombs. A tomb can only be opened if you both have a keyfile and you know the password. It also has advanced features, like steganography.

Knightsbridge Online FAQ

https://www.knightsbridge.net/faq/

files in all document directories - i.e. anywhere you'd normally put HTML files - with the extension either ".cgi" or ".pl". So you don't need to put the files

That's everything I could find.
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