SpeedCrunch - BitBucket
SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL.
Gematrix.org
Online Gematria Calculator with same phrases values search and words. English Gematria, Hebrew Gematria and Jewish Gematria and Numerology
Online Number Tools
World's simplest collection of useful utilities for working with numbers. Generate number sequences, create random numbers, sort, round, convert numbers, and more.
RapidTables
Online reference and tools - calculators, converters, math, electricity, web design
Data Units Conversion
Gbmb is a data units converter tool for computer data storage digital information units petabytes, terabytes, gigabytes, megabytes, kilobytes and data rate units.
DataMelt
DataMelt (DMelt), a free mathematics software for scientists, engineers and students. It can be used for numeric computation, statistics, symbolic calculations, data analysis and data visualization. This multiplatform program combines the simplicity of scripting languages, such as Python, Ruby, Grovy and others with the power of tens of thousands Java classes for numeric computation and visualization.
Omni Calculator
Omni Calculator solves 1879 problems anywhere from finance and business to health. It’s so fast and easy you won’t want to do the math again!
Calculatored
Calculatored presents the variety of calculation tools. Whether you are a Student, Teacher or a Businessmen you can find the best tool for your requirement.
Unitpedia
UnitPedia is an online web page for unit converter, math, and other stuff calculators, extra tools, name generator, and other tools generators.
Modulo Calculator
Unit Converter
Quick, free, online unit converter that converts common units of measurement, along with 77 other converters covering an assortment of units. The site also includes a predictive tool that suggests possible conversions based on input, allowing for easier navigation while learning more about various unit systems.
Calculator.net
Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
Calculators.org
Stemkoski's github
dlippman.imathas.com
Mathbox Demos - Github
MathStudio
MathStudio brings unprecedented computational power to your web browser, mobile device and computer. From building simple algorithms to creating interactive plots and animations, MathStudio bridges the gap between technology and your imagination.
Dippman iMaths
GeoGebra 3D
Free online 3D grapher from GeoGebra: graph 3D functions, plot surfaces, construct solids and much more!
PhiloGL - Surface Explorer
Surface Point Clouds
Desmos
Desmos offers best-in-class calculators, digital math activities, and curriculum to help every student love math and love learning math.
Mathpix • 3D Grapher
Mathpix 3D Grapher – Visualize 3D math
Math3d
An interactive 3D graphing calculator in your browser. Draw, animate, and share surfaces, curves, points, lines, and vectors.
CPM 3D Plotter
FooPlot | Gráficas en 2D
Meta-calculator
The most sophisticated and comprehensive graphing calculator online. Includes all the functions and options you might need. Easy to use and 100% Free!
GraphSketch
MAFA Function Plotter
A simple to use online function plotter with a lot of options for calculating and drawing graphs or charts of mathematical functions and their score tables.