Mac (9709 programs)

Pros: Easy-to-understand controls. Inspires strategic and critical thinking. Unlockable maps.

Cons: The objective is difficult to understand. Graphic design is hard to decipher. Lack of tutorials.

Pros: Handy on new keyboards.

Cons: Very basic. Not customizable.

Pros: This open-source software is free to download and install. Cross-platform compatibility enhances the flexibility of kdiff3.

Cons: The last update apparently took place in 2014. This system is intended to be used by those with prior developmental experience.