Professional Portable Encryptor

Professional Portable Encryptor is a security application that enables you to encrypt files, folders and data with passwords. It supports MD5 and SHA1 hash algorithms and DES, RC2, RC4, 3DES, 3DES two key, AES 128, and AES 256 encryption algorithms.

Encrypt files and folders with passwords

No installation is necessary, so you can save the downloaded files anywhere on the disk or keep it stored on a USB flash drive to seamlessly launch the tool on any PC without setup.
The main app window has a simple look but it's not quite intuitive. It's not possible to drag and drop files for encryption. Instead, you can use the embedded folder structure to navigate disk directories and drop files onto the list of items ready for encryption.

Set passwords and configure encryption options

You just have to type a password and confirm it to proceed with the encryption job, as well as pick another saving directory if you're not pleased with the default one. The encrypted files have ENF format and can only be decrypted using this app.
As far as encryption settings are concerned, you can pick the security algorithms for the filenames and data, along with the provider. Furthermore, you can filter filenames and exclude directories together with read-only, hidden, system or archive files.

Compatibility issues with the newest Windows

We tested Professional Portable Encryptor on the latest Windows versions in our tests. However, it took a very long time to load the application as well as to carry out the encryption. No errors popped up, however, and system resources were minimally used between jobs.
Taking everything into account, Professional Portable Encryptor comes packed with some interesting options for encrypting files and folders. Unfortunately, it hasn't received updates for quite some time, it looks like the software project is no longer in development, and it seems to have some compatibility issues with the latest Windows versions.