GnuPG for Windows
No nonsense file encryption, Linux and Windows
Symmetric File and Text Encryption
Single Linux or Windows binary for secure text encryption
A version of Plum Cave that uses the ChaCha20 and Twofish ciphers
The Best file security app.
SES brings back the uncrackable onetime pad, with a digital twist.
A tiny, fast encryption tool in C
ISC lets you encrypt & decrypt text and files of any type up to 4GB