Experience a vast, open-ended universe filled with an infinite number of adventures. You are the freelancer Edison Trent, an intergalactic jack-of-all-trades. Your mission: whatever you want. Become a smuggler or a ruthless space thug, a naval hero or a trader. Dodge through asteroid fields while piloting elite spacecraft. The action is endless as you make your way through 48 known star systems. Greed, morality, compassion, anger... whatever motivates you, the dynamic universe will respond.
Freelancer Stargate is actually Freelancer Freelancer Battle for Mankind with some modifications.
An overhaul mod by Anubis-3k. This will add new sounds, video, factions, maps and more.
This appears to be a TC. Once again, the author(s) are not too specific about what exactly this mod does.
What is documented can be found in File/Full Details.
A small patch to correct some language and weaponry issues.