As Savage Worlds has been mentioned, there is also Modern Age which works essentially based on tiers, Novice, Expert, Master etc.
Lords of Gossamer, has neither levels, nor classes, and is also diceless.
Omni has no levels, and neither does Tri-Stat, same for the same engine used with Age of Sigmar: Soulbound.
Lords of Gossamer, has neither levels, nor classes, and is also diceless.
Omni has no levels, and neither does Tri-Stat, same for the same engine used with Age of Sigmar: Soulbound.