Corinth said:
Deepwood Sniper from Masters of the Wild
DWS is 3.0 though requires little adaptation for use in 3.5. I think it's the best archery PrC out there BTW. It gives you a bunch of cool archery skills, without being obscenely over powered like the Peerless Archer is.
Darkwoods Stalker is a useless class if you aren't going to be fighting just orcs. Plus it is YET ANOTHER Elf only class. Where are the HUMAN only classes.
In fact I really think the OoBI got nerfed something serious with their sneak attack dice getting swapped out for the "Precision Attack". While the concept fits better, the ability has crippling limitations on it, since the precision attack is a standard action and NOT an attack Action. Especially given it's range limitations, I just can't see where it would be preferable to use it vs a full attack.
Kensai with it's self enchanting weapon does have some interesting possiblities for an archer so it is worth considering. However, it does little aside from that to improve one's archery skills IIRC (I may well be wrong on this).
Craigtop archer is kind of a sucky version of DWS.
Complete Adventurer iirc has a bunch of really terrific ranger spells for archers. One of the best being a 1st lvl spell that enables you to threaten the standard 5' area with a bow. That pretty much kills the only reason for taking OoBI, which is to get the Close Combat shot ability (no AoOs from firing a bow in a threatened area). Another lets you do the Arrow Storm bit (Fire an arrow into 1 targ/lvl or something like that). There's a couple others that I forget just now.
You know there really oughta be a good mounted archer prestige class. I don't recall ever seeing one. Mounted archery can really kick ass, since you can get a full move for your mount and still get in a full attack.