errProof alternatives

  • 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 might contain the answer.

    tags: built-in-search-engine computation knowledge-engine search-engine
    platform: Online Android iPhone Windows Phone iPad Kindle Fire

  • is a website where you can store text for a certain period of time. The website is mainly used by programmers to store pieces of sources code or configuration information, but anyone is more than welcome to paste any type of text. The idea behind the site is to make it more convenient for people to share large amounts of text online. Users have the ability to make private pastings, so they are only visible to the people they choose to share their links with.

    tags: code-snippets text-copy
    platform: Windows Online Android iPhone HP webOS Google Chrome Firefox
  • SpeedCrunch

  • SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and a extensive list of features, including: Unlimited Variables, Syntax Highlighting, Functions, with 'Automagic' Completion, 50 Decimal Precision, Input History and more...

    tags: Portable algebraic-calculation calculator live-preview mathematics
    platform: Mac OS X Windows Linux
  • Ghostbin

  • Ghostbin is a paste service, and I’m going to skip explaining precisely what that is—it’s fairly obvious. The real interesting questions are “why did you build it?” and “where did I get all these bees?”

    tags: code-hosting code-sharing code-snippets paste-code paste-host
    platform: Online jQuery Bootstrap

  • Online Interpreters in JavaScript. Online coding and REPL. Run and share code. Try QBasic, Forth, Ruby, Python, Lua, Scheme, Emoticon, Brainfuck, LOLCODE, Unlambda, Bloop, JavaScript,, Move, Kaffeine, CoffeeScript, Roy programming languages.

    tags: coding coffeescript forth interpreter javascript
    platform: Online
  • Calculator

  • Calculator provides simple and advanced mathematical functions in a beautifully designed app.• Perform basic calculations such as addition, subtraction, multiplication and division• Do scientific operations such as trigonometric, logarithmic and exponential functions• Perform basic calculations on the go using Android Wear

    tags: calculator mathematics scientific-calculator
    platform: Online Android Android Tablet Android Wear
  • Qalculate!

  • Qalculate! is a multi-purpose desktop calculator for GNU/Linux and Windows. It is small and simple to use but with much power and versatility underneath. Features include customizable functions, units, arbitrary precision, plotting, and a user-friendly interface (KDE or GTK+).

    tags: algebra calculator currency equation-solving exchange-rates
    platform: Windows Linux Xfce

  • lets you write and publish text instantly. Write a note for yourself to read later. Create a standalone article you can quickly broadcast on social media — or publish a full blog.

    tags: anonymity anonymous-secure-filesharing blog-publishing blogging blogging-application
    platform: Mac OS X Windows Linux Android iPhone Chrome OS Android Tablet iPad Google Chrome Kindle Fire
  • RealCalc Scientific Calculator

  • RealCalc Scientific CalculatorAndroid's #1 Scientific Calculator. A fully featured scientific calculator which looks and operates like the real thing.Looking for fractions? Degrees/minutes/seconds? Landscape mode? You need RealCalc Plus. See elsewhere on this page for the link, or select 'Upgrade' from the RealCalc menu.RealCalc includes the following features:* Traditional algebraic or RPN operation* Result history* Unit conversions* Physical constants table* Percentages* 10 memories* Binary, octal, and hexadecimal* Trig functions in degrees, radians or grads* Scientific, engineering and fixed-point display modes* Configurable digit grouping and decimal point* Full built-in help* A complete lack of advertisingRealCalc Plus contains all these features, plus:* Fraction calculations and conversion to/from decimal* Degrees/minutes/seconds calculations and conversion* Landscape mode* User-customizable unit conversions* User-customizable constantsIf you find RealCalc useful, please consider purchasing RealCalc Plus to support further development. Thank you.FAQ:* If you want data size conversions in multiples of 1024, use kibibytes, mebibytes, gibibytes, etc - see* If the percent key appears to give wrong answers, make sure you are pressing '=' at the end, e.g. '25 + 10 % =' will give 27.5.* If sin/cos/tan functions don't give the answer you are expecting, make sure you are in the correct angle mode. Degrees, radians and grads are supported, indicated by DEG, RAD, GRAD in the display. Use the DRG key to change mode.* If any of the digit keys are disabled, or the decimal point doesn't work, or you have answers with letters in, or basic arithmetic appears to be wrong, then you are in binary, octal or hexadecimal mode. Press DEC to return to decimal operation. If you don't need these modes, please make sure that 'Enable Radix Modes' is disabled in the settings.Please read the help for more information. »

    tags: calculator mathematics scientific-calculator unit-converter
    platform: Android
  • Soulver

  • Maths on a Mac as it should be. Soulver is a new kind of calculator application which uses a simple yet powerful word-processor style interface instead of the traditional "button" approach to doing math.

    tags: calculator mathematics natural-language-processing
    platform: Mac OS X
  • Windows Calculator

  • Windows Calculator, commonly known as Calculator from the application's title bar, is a calculation application included in all versions of the Microsoft Windows operating system. It can be activated by the command "calc" on most Windows systems.

    tags: bundled calculator windows-built-in
    platform: Windows

  • RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs. People use RANDOM.ORG for holding drawings, lotteries and sweepstakes, to drive games and gambling sites, for scientific applications and for art and music. The service has existed since 1998 and was built and is being operated by Mads Haahr of the School of Computer Science and Statistics at Trinity College, Dublin in Ireland. »

    tags: randomise random-number
    platform: Online
  • fxSolver

  • Online math solver, equation library, graphing calculator and science/engineering problem helper.Calculate multiple equations at once, Edit existing formulas and Create new ones, Compute large numbers of values, Plot graphs, Link your results, Solve full problems and Share worksheets with your friends.

    tags: built-in-editor calculator database educational engineering
    platform: Online
  • CalcTape

  • CalcTape is a revolutionary new kind of pocket calculator. With CalcTape, also extensive calculations remain clearly structured. CalcTape makes the arithmetic process visible - you can generate intermediate results and subsequently correct or change all numbers and operations.

    tags: calculation calculator cataloging delphi foxpro
    platform: Windows
  • Numi

  • Numi is a handy calculator app for Mac. It allows to describe tasks the natural way and instantly get an accurate answer. For example, $20 in euro - 5% discount or today + 2 weeks. Numi is not limited to simple calculations, it can solve expressions of any complexity, with parentheses, mathematical operations and high accuracy (up to 38 mantissa digits).

    tags: calculator menu-bar menu-bar-app menu-bar-apps menubar-app
    platform: Mac OS X