eMule - eMule is a free peer-to-peer file sharing application for Microsoft Windows.
Cryptomator - When it comes to saving your files on a cloud server, it is important to ensure the security of those files. Keeping your delicate files out of the wrong hands can save you a lot of time and hassle. Read more about Cryptomator.
Shareaza - Shareaza is the most luxurious and sophisticated file sharing system you'll find.
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Soulseek - Soulseek® is a unique ad-free, spyware free, and just plain free file sharing application.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.