fxSolver
WolframAlpha
SpeedCrunch
Qalculate!
Numi App
Soulver
Wolfram Mathematica
MATLAB
Chart Maker Pro
Line Graph Maker
Desmos
GeoGebra
Simple graph maker
X (Twitter)
clkGraphs
WolframAlpha
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.
fxSolver is a free tool developed by a team of engineers and programmers with the sole intention of providing a unique, useful and free service. The vision of the development team is to allow students, engineers, and hobbyists to come in contact with mathematics and to be able to solve problems without necessarily being familiar with professional math software or programming languages.
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WolframAlpha - WolframAlpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.
Line Graph Maker - Create a line graph for free with easy to use tools and download the line graph as jpg or png file.
SpeedCrunch - SpeedCrunch. 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. Download Documentation Donate .
Desmos - A beautiful, innovative, and modern online graphing calculator.
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
GeoGebra - GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching.