Alternatives to errProof



Precise Calculator
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. Commands if, goto and print can b…


SpeQ Mathematics
SpeQ is a small, extensive mathematics program with a simple, intuitive interface. All calculations are entered in a sheet. In there you can freely add, edit and execute calculations. SpeQ supports all common functions, constants, and units. Further…

Try It Online (TIO)
TIO is a family of online interpreters for an evergrowing list of practical and recreational programming languages.Simply pick a programming language, and start typing. Once you click the run button, your code is sent to a TIO arena, executed in a s…

MyScript Calculator
With MyScript Calculator, perform mathematical operations naturally using your handwriting. Easy, simple and intuitive, just write the mathematical expression on the screen then let MyScript technology perform its magic converting symbols and number…

PasteOnline
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 information, but anyone is more than welcome to paste any type of text. The ide…


Calculator
The built in Calculator on the iPhone. Calculator is two calculators in one: rotate it to landscape to transform it from basic to scientific.

galculator
galculator is a GTK 2 / GTK 3 based calculator with ordinary notation/reverse Polish notation (RPN), a formula entry mode, different number bases (DEC, HEX, OCT, BIN) and different units of angular measure (DEG, RAD, GRAD). It supports quadprecisio…

Random Number Generator
Randomly generate millions of integers or floating point numbers in the desired radix (base), format, and numeric range. Generated random numbers may match any one of the 17 builtin probability distributions.  Specify numeric range with lower and …

Calculator by Xlythe
Calculator is a simple 4 function calculator, with a panel that has more advanced functions when you need them. It includes history, real time graphing, base conversion, and more. It also comes with a lockscreen widget, a floating calculator, and a …

HEXelon MAX
HEXelon MAX is a science calculator. It solves math expressions like: Sin(Pi)Root(8;3)+3. Exchange rates table and currency converter are update from Internet by one click. Units converter makes easier to convert various units,14 categories of uni…

Calculator plus1
Features a calculator:Standard arithmetic.The calculation of trigonometric functions in degrees radian.Calculation of the exponential function, the natural logarithm, logarithm.The calculation of power functions (x to the power y, x squared, the squ…


RandomRequired
A random string generator that can take numbers, letters, symbols, Chinese characters and arbitrary input as source to generate random string or text based on custom settings.

Leon's Random Generators
Several random generators for creating songs, poems, band names, and comic strips
