Cheat Engine

Cheat Engine is often used by exploiters to god themselves and give them special abilites in game, like say you have 1 money in a tycoon, you can turn it into 1000000000 money in game. you don't like losing, so you change your health to 10000 in SFOTH IV (Where most exploiters usually test their exploits), Change their walkspeed to 100, post a decal on every brick in the game, etc.

Exploits are often on YouTube, This for example and more. Exploits are being cracked down by the ROBLOX Administrators and are broken and banned, some even shut down the game.

It is also a Windows Debugger.