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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 .
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Numbr - An elegant calculator for the web
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CalcMate: notes calculator - calculate numbers, dates, units within notes
Numi App - Numi is a beautiful text calculator for Mac.