Sopwich
Qt4-based dogfight simulator inspired by Sopwith
What I always missed in good old Sopwith by David L. Clark was a full-featured single player mode with various locations, new enemies, level bosses and other bells and whistles.
Sopwich (this is how we pronounce Sopwith in Russian) is an attempt to combine this classic shoot'em up gameplay with an interesting single player campaign and fancy vector graphics using Qt4.