Qalculate! Alternatives

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 is a beautiful text calculator for Mac.

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Try for free freemium

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.

Get help, support, and tutorials for Windows products—Windows 10, Windows 8.1, Windows 7, and Windows 10 Mobile.

SpeQ is a small, extensive mathematics program with a simple, intuitive interface.

The graphing calculator that makes learning math easier.

Calculate, convert, and split tips from your wrist

WolframAlpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.

Browser-based notepad built for math calculations.

fxSolver is an free online math solver, equation library, graphing calculator and science/engineering problem helper. To get started, add some formulas, fill in any input variables and press "Solve."

RealCalc Scientific Calculator

CalcTape is a revolutionary new kind of pocket calculator.

High precision scientific calculator with full support for physical units.