KeyCastr, an open-source keystroke visualizer

LuLu is the free open-source macOS firewall

Prevents your Mac from going to sleep.

Clean and simple clipboard manager for developers

SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permissio…

BlockBlock provides continual protection by monitoring persistence locations.

OS X application to draw a border around the focused window