TheFirstOnes

1. AirDC++
for windows
https://airdcpp.net/download#windows-7-8-8-1-10
for Linux
https://airdcpp.net/download#linux-nas-docker-other

2. ApexDC

https://www.apexdc.net/download/

3. DC++

https://dcplusplus.sourceforge.io/

4. StrongDC++

http://strongdc.sourceforge.net/download.php?lang=eng

5. EiskaltDC++

https://sourceforge.net/projects/eiskaltdcpp/

6. FlylinkDC++

https://sourceforge.net/projects/flyllnkdc/

If you have knowledge of more DC++ clients let us know