Science (274 programs)

Pros: Solves complex equations instantly. Also displays results in graph form.

Cons: Capabilities don't extend beyond equations.

Pros: Conversational programming. Easy to adapt to. Builds and works fast. Solid interface.

Cons: Usable only with specific mills. Doesn't support all mill types. Very slow error handling. Minimal included help.

Pros: Free. Identical to the official calculator. Available offline. Gives you GRE tips.

Cons: Support needs improvement.