OpenCalc - Simple and beautiful calculator for Android. Contribute to Darkempire78/OpenCalc development by creating an account on GitHub.

SpeedCrunch - SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

Numi App - Numi is a beautiful text calculator for Mac.

Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.

Hissab - Just Type and Calculate Anything, Instantly

EBTCalc - Programmable Reverse Polish Notation (RPN) calculator that lets you create custom buttons.