encrypt0r is a Open Source app to encrypt and decrypt your files with a passphrase.
Sometimes you just need a quick way to encrypt files securely using password phrases.

encrypt0r provides a simple drag-and-drop interface that uses passwords to encrypt / decrypt files.
License: Open Source
Requirements: 11|10|8|7|Linux|macOS
The author’s web link: https://github.com/kunalnagar/encrypt0r
Webmaster’s note:
When running the app on Mac/Windows, you might get an untrusted developer warning. This is because the app is not signed by the developer (aka me). Signing an app requires a Signing Certificate that costs hundreds of dollars per year. Apart from the warning, the app works as advertised.