Samba is an implementation of the SMB/CIFS protocol for Unix systems, providing support for cross-platform file sharing with Microsoft Windows, OS X, and other Unix systems. Samba can also function as a domain controller or member server in Active Directory or NT4-style domains.

A Python library to parse MT940 files.

Tremotesf is yet another, but modern (first-released in 2016) cross-platfom GUI for Transmission daemon written in C++ and Qt.