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 .

Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.

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

Numbr - An elegant calculator for the web

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

CalcMate: notes calculator - calculate numbers, dates, units within notes