Is there any other gear beside the Personal Stealth Field that helps with stealth?
(Also, is there a master index some where for searches like this? starwarsrpgindex.com is so useful for Saga Edition)
Anything beside Personal Stealth Field?
That's a good link, thanks. 
Running off memory, the optical camouflage attachment for armor. Lords of Nal Hutta has the shadowsuit, Fly Casual has the mimetic suit, Special Modifications has the cloaking coat, Desperate Allies has the sound dampener field, and Keeping the Peace has the reflec shadowskin attachment.
There are two different Personal Stealth Fields, one in EotE CRB (dubbed "Outlaw Tech") and one in the AoR CRB. They function the same.
Mimetic Suit (Fly Casual 47) upgrades your stealth checks, and is armor with hardpoints so can be upgraded.
Shadowcloak (Fly Casual 49) doesn't really help your stealth checks to remain hidden per RAW (although I'd count it as "right tools for the job" and give you a Boost die if you were trying to hide, going on the item description)
Sakiyan Shadowsuit (Lords of Nal Hutta 105) is another piece of armor, good for Stealth checks and has a hardpoint.
Sound Dampener (Desperate Allies 53) does what it sounds like Adds setbacks to people trying to detect the noise you make.
Holographic Ghillie Suit (Dangerous Covenants 58) requires that you stay still, but gives you a nice hiding ability. It is not armor.