Nice thread. I think I will copy it for the FF3 forum.

Fighter - Heart: Dispel negative status on self if another party member becomes afflicted with the same status
Knight - Cover

Thief - Smoke Bomb: escape from battle w/ 100% success
Ninja - Ninja Vanish: chance to evade increases with % of your life an attack would take off

Monk - Counter
Black Belt - Combination: When an attack deals over 200% of an enemy's remaining life the Black Belt will perform a second attack against another enemy.

Red Mage - Tactician: chance to not use charge on spell cast
Red Wizard - Jack of All Trades: using a physical attack increases effectiveness of next spell cast, and vice versa.

White Mage - Healing touch: Healing effects increased by 50% on targets in critical condition
White Wizard - Phoenix: Revives and restores all party members when KOed.

Black Mage - Drain Energy: killing an enemy without using a spell restores a spell charge (random level)
Black Wizard - Magic Mastery: Cast Level 3 and lower spells for free