There are few fan remakes of the first Privateer: Wing Commander : Privateer Gemini Gold
is probably the best of them. It's Standalone remake of Original WC: Privateer and it's expansion Righteous Fire made using Vega Strike
game engine. It's considered more faitfull remake of WC:P than Privateer Remake. Development is still ongoing and game is currently at version 1.02a and available for Windows, Mac and Linux. Wing Commander: Privateer Remake
Site is currently down) was also a remake of WC:P using Vega Strike Engine and it's expansion but added some new features purists did not like (and thus, IIRC, Gemini Gold was born). I'm not entirely sure what happened but the home page of the project has been down for quite a while now and development halted couple years back with release of the version 1.2 in 2005. You can still download it from Wing Commander Universe
Project page at Souceforge and it's available for Windows, Linux and Mac.
There's also an fan modification of WC:PR called Parallel Universe
that seeks to expand the playability of the game by introducing new ships, rebalancing certain aspects and adding new campaigns. Game is still in development and as far as I can see, you have to build it from source to play it. Privateer: Ascii Sector
is well... a ASCII graphics (You know Rogue, Nethack and the like) remake of the game. It's still in development currently at version 0.4.5.1 and available for Windows, Mac and Linux.
you get a plus for this... didn't know these were around, i used to love privateer back in the day