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Calcbot for Apple Watch - Calculate, convert, and split tips from your wrist
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 .
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
TTCalc - TTCalc is an open source bignum mathematical calculator.
SpeQ Mathematics - SpeQ is a small, extensive mathematics program with a simple, intuitive interface.
Precise Calculator - Free programmable scientific calculator for Windows; solve math problems, algebra, statistics examples and tutorial