I'm unfamiliar with tome of battle but
Recharge magic from UA provides spellcasters with a round based recharge time for spell slots, it also blocks all access to that spell level after a spell is cast until the recharge comes around again.
Binders in Tome of magic get supernatural powers that are usable 1/X rounds similar to a dragon breath.
Warlocks/DragonFire Adepts/Technological Savants get their magic powers at will.