Space Invaders is one of the earliest arcade shoot 'em up games. The player can move horizontally across the bottom of the screen and must shoot at an incoming wave of aliens before they reach the bottom.

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages, via Internet, without having to pay for SMS, using a mobile phone.

WireGuard is a novel VPN that runs inside the Linux Kernel and uses state-of-the-art cryptography (the "Noise" protocol). It aims to be faster, simpler, leaner, and more useful than IPSec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN. WireGuard is designed as a general purpose VPN for running on embedded interfaces and super computers alike, fit for many different circumstances. It runs over UDP.

Toppler is an almost complete reimplementation of the old game known as Tower Toppler or Nebulus.

KMouseTool clicks the mouse whenever the mouse cursor pauses briefly. It was designed to help those with repetitive strain injuries, for whom pressing buttons hurts.