ksnip the cross-platform screenshot and annotation tool
Shotcut is a free, open source, cross-platform video editor.
Qt based cross-platform screenshot tool with annotations
ch.rose is an indie project based on arch linux and ALCI.
A scientific plotting library for C/Fortran built on cairo
Allows Linux users to use a HID compatible USB foot pedal as a mouse
Luz is an mGSTEP based X11 Window Manager.
smg - screen magnifying glass
X11 developer's 'workbench' and lightweight toolkit API
elvis, a vi text editor clone
SharpDot cursor theme for X11 Desktops