Wolfram Alpha
Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that...
The website has a lot of useful and unique tools.
errProof offers a collection of webbased unique tools for any user
Productivity Business and Commerce
web-based messages messaging online-service pastebin calculator quotes paste-text random
Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that...
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Console Calculator is a powerful calculator with a simple console interface. This calculator supports many built-in mathematical functions, remembers recent entries, supports creation of user defined variables and custom functions.
Commercial Mac OS X Windows
Calculator for the GNOME Desktop Environment, formerly known as gcalc (and gcalctool CLI).
Free Open Source Linux GNOME
Programmable scientific calculator which has more than 150 mathematical functions and all of them return as many digits as you need. It can calculate with real numbers, complex numbers, fractions, vectors, matrices.
Free Open Source Windows
A modern, scientific calculator that is easy to use. While other calculators display only one number at a time, this one shows you the whole expression you are inputting, leading to a much more user friendly experience.
Commercial Android
Omni Calculator is a web/mobile calculator that solves concrete problems such as mortgage payment, gross margin, body mass index, break-even point, etc.
Free Android iPhone iPad Web
With MyScript Calculator, perform mathematical operations naturally using your handwriting.
Free Android iPhone Android Tablet iPad
Pasteonline is a website where you can store any text online for easy sharing. The website is mainly used by programmers to store pieces of sources code or configuration...
Free Web
MyPasteBox is a advanced text storage tool where you can store text, sensitive data and source code for a set period of time.
Free Web