These martial arts are from the Talislanta game, originally published by Bard Games in 1987. Talislanta was an attempt to make a fantasy setting very different from the vanilla fantasy settings then dominating the market -- the tagline for the game/setting is "Talislanta. Still No Elves!" Among the many elements of the setting are martial arts systems. Back in the 90s, I converted several of them for the 4th edition Hero System, then when 5th edition was published I uploaded several of them to the Hero Games webpage Digital Hero ezine. Sadly, those submissions are lost to the Internet Archive.
When 6th edition was made, I updated the martial arts yet again (adding Aerial Combat and renaming Zandir Bladesmanship to Swordsmanship, as per the then-recently-updated Talislanta rules), and uploaded them to the boards. They didn't survive the changeover, but I see that they're still popular enough to warrant being resurrected. So, here they are. The prefab file contains:
Aerial Combat: The fighting art of skilled warriors of the flying races (Aerdians, Stryx, Gryphs, etc.)
Arimite Knife-Fighting: Provided in both melee and ranged flavors, the lethal fighting style of the dour Arimites is presented.
Swordsmanship: The flamboyant fencing style of the Cymril swordsmages, Zandir bravos, and Gao-Dinian corsairs.
Tazian Combat: The brutal and effective hand-to-hand style of the Thralls of Taz.
If you want to try a different setting (it's based on an easy-to-learn rules system, but can readily be converted to Hero System), I recommend you give it a try. Most of the books for it are available for free on-line, by the grace of setting creator Stephen Michael Sechi.
A pdf of the martial arts styles, formatted in standard Hero style, can be found here.