Crypturn for Windows

This simple encryption tool worked, but if privacy is what you're looking for, you won't find it since the program isn't password-protected.

Crypturn's user interface is very straightforward. Simply browse for the file, enter and verify your key, and click OK to encrypt or decrypt the file. The program doesn't offer a Help file, only a vague three-step guide. It also doesn't offer users the choice of encryption options. When we put it to the test, it quickly and easily encrypting and decrypting files. But we found that the program itself isn't password-protected, so make sure you close the program immediately after encrypting a file. Otherwise, the key, though hidden, remains in its field and anyone can decrypt the file.

Anyone just looking for a quick way to send an encrypted file will appreciate this program's stripped-down approach to file encryption. If others can access your PC, you might want to consider a more secure option.