bitcoin wallet importer/exporter
Blackcoin-More is the most popular Blackcoin Client, based on Bitcoin-Core.
Original Blackcoin QT wallet. Development moved to Gitlab
MXE (M cross environment)
Copay is a secure bitcoin wallet platform for both desktop and mobile devices.
A library for working with Bitcoin
SImple, common-sense Bitcoin-themed Python ECC library
Peer-to-peer Bitcoin mining pool