eMule - eMule is a free peer-to-peer file sharing application for Microsoft Windows.
DC++ - DC++ developed by Jacek Sieka.
Fopnu - Fopnu is P2P File Sharing System. 100% Free, Simple and Easy to Use. Contains NO Spyware and NO Ads.
EiskaltDC++ - EiskaltDC++ is a program for UNIX-like systems that uses the Direct Connect and ADC protocol.
Emule Beba - Originally beba was concepted as a "light" eMule version.
LinuxDC++ - LinuxDC++ is a port of https://alternativeto.net/software/dc/ direct connect client to Linux.