OpalCalc Alternatives [Page 3]

The open-source, web-based thinking tool that facilitates effective thinking for solving problems.

Open Source freemium $4.0 / Monthly

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

Calca is an advanced symbolic calculator for iOS, OS X, and Windows that's as easy to use as a text editor.

An all-in-one unit converter in 6 languages

Open Source

Free programmable scientific calculator for Windows; solve math problems, algebra, statistics examples and tutorial

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

PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody...

Helping you make rational decisions, one calculation at a time.

CalculatePlus makes it possible to perform basic and free online calculations and conversions +> with much ♥ by CalculatePlus

Share Anything Proportionally

Free UK VAT calculator. We have created this VAT calculator as a free to use tool for calculating VAT rates in the UK.

Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!

Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.