Default controls:

Fighters:
Mouse - Steer
WASD - Thrust forward/backward left/right
Mouse 1 - Fire weapons set to primary fire
Mouse 2 - Fire weapons set to secondary fire

Capital ships:
Mouse - Aim Turrets
WASD - Thrust forward/backward left/right
QE - Steer
Mouse 1 - Fire weapons set to primary fire
Mouse 2 - Fire weapons set to secondary fire

General:
Mouse Wheel - Zoom in/out
Mouse 3(wheel click) - Center view on ship
Enter - Chat
Shift-Enter - Toggle team chat in team game modes
F1 - Show score
ESC - Exit game