What program to edit pokemon abilities/IVs/EVs in B/W?

[Sni]

I've seen a ton of stuff for DPPt but almost nothing for gen V. Does anyone know where I could find something like this?

[Monty3540]

Depends how much you want to edit...

Do you mean just changing the ones in your Party? If so, use PokeGen / PokeSav

If you mean Abilities for all wild pokemon - start with PRC (Pokemon Rom Changer)

All tools should be accessible in an archive on this website (Y)

[BlackShark]

1 hour ago, Monty3540 said:

use PokeGen / PokeSav

Those are both very outdated. You really should use PKHeX nowadays.