GNOME Web (Epiphany) is a free and open-source web browser for the GNOME desktop environment.

FireGestures is a Firefox extension which enables you to execute various commands with six types of gestures.

Slimjet is a fast and powerful web browser that is based on the Blink engine and is built on top of the Chromium open source project.

Easystroke is a gesture-recognition application for X11.