Johnny Cash
- 1x2 Gaming
- Amatic
- August
- Belatra
- Betsoft
- BGaming
- Booongo
- CT Gaming
- Dragoon Soft
- Endorphina
- Evoplay
- Felix Gaming
- Fugaso
- Gameplay
- Gamshy
- Genesis Gaming
- Gluck-Gamevy
- Habanero
- Igrosoft
- IGT
- Iron Dog Studio
- KA Gaming
- Kalamba Games
- Mascot
- Microgaming
- Mobilots
- Mr.Slotty
- NetEnt
- Novomatic
- Play'n Go
- Playson
- Playtech
- Popok Gaming
- Pragmatic Play
- Push Gaming
- Quickspin
- Red Rake
- SimplePlay
- Slotfactory
- SmartSoft Games
- Spade Gaming
- Thunderspin
- Tom Horn Gaming
- Triple PG
- Wazdan
- Yggdrasil Gaming
