iTerm2 is a terminal emulator for Mac OS X that does amazing things.

Darwin/macOS emulation layer for Linux

LuLu is the free open-source macOS firewall

Mac app that shows all open files, directories, sockets, pipes and devices in use by all running processes. Nice GUI for lsof.

Magic auto brightness based on screen contents 💡

General purpose plain text editor for macOS. Widely known for its live collaboration feature.

An Xcode plug-in makes POWER MODE happen in your Xcode.

Show the current latency of your connection in your Mac OS X menu bar

A SIMBL extension for Mac OS X to redirect Chrome notifications to Notification Center