To enter a cheat code, go to the main window of the game.

Type the tilde key (~) then type in the code text, and then type tilde (~) again to activate the code.

Code: Result:

intel Add 100,000 intelligence points to the Current Player.
research Add 100,000 research points to the Current Player.
money Add 100,000 resources of each type to the Current Player's treasury.
viewallcombats All combats are shown on screen.
fastbuild All construction queues get 1,000,000 in accumulated resources.
restoresupplies All of the Current Player's ships get full supplies and ordinance.
allplayershuman All players set to human control.
repair Completely repair the currently selected ship.
alltech Current Player gains all technologies.
allempseen Current Player has encountered all other players.
allsysseen Current Player has seen all solar systems.
omni Current Player is omnipresent in all solar systems.
nomaint Current Player's empire no longer pays maintenance.
viewalldesigns Get copies of all enemy ship & unit designs.
showstats Show statistics on the selected combat object.
collisiongrid Show the collision grid in combat.
retrofit [design name] Retrofit the current ship to the new design.