Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
hashcat - The World's Fastest CPU/GPU powered password cracker.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
John the Ripper - A fast password cracker for Unix, macOS, Windows, DOS, BeOS, and OpenVMS
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
Pyrit - Pyrit allows to create massive databases, pre-computing part of the IEEE 802.