The Unarchiver - Get the top application for archives on Mac. It's a RAR extractor, it allows you to unzip files, and works with dozens of other formats.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
WinZip - The world's best file compressor in the world.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
Bandizip - Bandizip : All-In-One Free Zip Archiver. Bandizip is a lightweight, fast and free All-In-One Zip Archiver.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.