Simplify the following text for a Grade 8 native English-speaking person.
Original: It comes with the NXT-G programming software , but a variety of unofficial languages exist , such as NXC , NBC , leJOS NXJ , and RobotC .
Simplified: It comes with the NXT-G programming software . It is posible to use unofficial programming languages , such as NXC , NBC , leJOS NXJ , and RobotC .