Our website provided a free download of Targetware 0.6 for Mac. Targetware for Mac is included in Games.
From the developer:
Targetware is a massively-multiplayer, high-fidelity, cross-platform combat flight sim system that gives players total control over their flight sim environment. The first three flight simulators using the Targetware system, Target Rabaul (WWII), Target Korea (Korean War), and Target Flanders (WWI), can be easily downloaded from within the Targetware interface. Online play is free during the Open Beta period
You may want to check out more software for Mac, such as VirtualVillagers-TheSecretCity or A Song In The Void, which might be related to Targetware.