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PCalc - PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody...
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.
Precise Calculator - Free programmable scientific calculator for Windows; solve math problems, algebra, statistics examples and tutorial
Calcbot for Apple Watch - Calculate, convert, and split tips from your wrist
Google - Google Search, also referred to as Google Web Search or simply Google, is a web search engine developed by Google. It is the most used search engine on the World Wide Web