Event Viewer - Get help, support, and tutorials for Windows products—Windows 10, Windows 8.1, Windows 7, and Windows 10 Mobile.
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
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
PCalc - PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody...