Discord is a freeware proprietary VoIP application designed for gaming communities.

FSlint is a utility to find and clean various forms of lint on a filesystem.

Enhanced SQL Portal is a full featured MySQL database.

Rebol is a cross-platform data exchange language and a multi-paradigm dynamic programming language.

Redis Desktop Manager is a cross-platform open-source Redis DB management tool.

Zenmap is the official cross-platform GUI for the Nmap Security Scanner. It is free and runs on Linux, Windows, Mac OS X, etc.

Tunnelblick is an open-source Virtual Private Network (VPN) client software for macOS.

Tcl is a high-level, general-purpose, interpreted, dynamic programming language.

Haguichi is free and open source software.