Soulver

Soulver helps you do quick calculations and work things out. Use Soulver to play around with numbers, do "back of the envelope" calculations, and solve day-to-day problems.

Commercial Mac OS X

Swift Calcs

The Collaborative Computational Notebook Built for Modern Engineering. Enter math as it appears on paper, get instantaneous results, and share your calculations with colleagues and clients.

Free Web

OpalCalc

OpalCalc is a brand new type of calculator for the PC. As easy to use as Notepad or a word processor, OpalCalc allows natural language in the sum and multi-line support so you can go back and adjust your previous calculations on the fly.

Freemium Windows

InstaCalc

An online calculator that allows the free form mixing of numbers and words, and saves calculations automatically.

Free Web

Blabr

Interactive tables, sliders, plots and more. Scientific computing in the browser.

Free Web

Online Terminal Calculator

Online terminal based calculator, it is one of the most productive calculator in online, it uses terminal based approach instead of traditional push button based.

Free Web

Wakari

Wakari provides web-based Python data analysis via embedded iPython notebooks. Embedded IPython Notebook Work in the cloud with IPython notebook. You may also...

Freemium Web