OpalCalc

OpalCalc is a brand new type of calculator for the PC.

16 Alternatives To OpalCalc

Calculator by Xlythe

Calculator is a simple 4 function calculator.
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Gnome calculator

Calculator for the GNOME Desktop Environment, formerly known as gcalc (and gcalctool CLI).
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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
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Insect

High precision scientific calculator with full support for physical units.
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InstaCalc

The fast, easy, shareable online calculator.

Multi Share Calculator

Share Anything Proportionally

NaSC

Do maths like a normal person.

Numi

Numi Organic Tea is a premium, Fair Trade sustainable company specializing in unique and innovative blends of green, black, white, oolong teas, Pu-erh, rooibos, herbal and Flowering Tea™.
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PCalc

PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody…
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Qalculate!

Qalculate! is a multiplatform multi-purpose desktop calculator.

RealCalc Scientific Calculator

RealCalc Scientific Calculator
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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 .

WolframAlpha

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

fxSolver

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.”

galculator

galculator is an open source scientific calculator with a modern GUI and a wide range of operation modes. It supports algebraic, reverse polish (RPN) and paper mode notations.

handyCalc

Solve things in your hand.