Best graphing software for free download

Graphing, curve fitting and calculating software. Graphs Cartesian, polar and parametric functions, graphs of tables, implicit functions and inequalities. Calculus features: regression analysis, derivatives, tangents, normals and more.
Related software: graph, graphs, regression, plotting, curve, fitting, analysis, plot, equation, inequality, polar, parametric, derivative, calculus, calculating, …

The PHP graphing scripts provide a very easy way to embed dynamically generated graphs and charts into PHP applications and HTML web pages.Very easy to use and add professional quality graphing to web pages / applications in minutes. Try for free.
Related software: php, scripts, script, pie, graph, chart, graphing, charting, php scripts, php script, php pie graph, …

FlyCharts is a set of Macromedia Flash (SWF) files which creates good-looking charts. FlyCharts doesn’t need any installation, works with any scripting language, can be used in any browser, is scalable & flexible, size of output file is really
Related software: charts, graphs, graphing, component, flash, macromedia, html, xml, swf, asp, asp.net, jsp, php, perl, cgi, graphing component, …

Powerful graphing ActiveX control to create graphs in a huge range of styles. Great for scientific or technical graphs. Do a graph with just a few lines of code. Manipulate the layout at runtime. Multiple graphs. Drag, zoom and scroll. Much more.
Related software: ecgraph, graph, plotting, plotter, activex, component, control, visual, basic, scientific, engineering, data, visual basic, …

UltimaCalc is a collection of mathematical tools wrapped up in one program, for use by scientists, engineers and students. The main window is a calculator that accepts mathematical expressions as plain text and evaluates them to 38 digit precision.
UltimaCalc can remain always ready for use. The use of text input means that this window can be small enough to remain open at all times without blocking the view of other windows. This window can be partially transparent when inactive, so you can read documents open underneath it.
A major feature of UltimaCalc Professional is its Symbolic Algebra module: Simplify expressions, differentiate them. Integrate a wide range of expressions, and see how the result was obtained. Find Taylor series. Factorise polynomials, divide one polynomial by another or find their GCDs.
Analyse a set of measurements, or approximate complicated functions with simpler ones. Use a variety of methods to fit lines to data, plotting the result. Calculate linear regression, or use an absolute deviation fit to minimise the distorting effects of outliers. Perform a multivariate linear regression when one variable is a linear function of several others. Fit polynomials and other non-linear expressions to the data.
The Standard Deviation tool calculates the mean, median, standard deviation, skewness, etc of a data set.
Other tools solve simultaneous linear or non-linear equations; find the values of parameters that minimise the value of an arbitrary expression; find roots of polynomials up to tenth order; or solve triangles.
Plot arbitrary functions. Specify starting and ending conditions and how variables X and Y change at each step. Combine up to 8 plots.
Save your results: the calculator window and most special tools can record all calculations in a plain text file. Most special tools can also save their data along with notes to a calculation file future reference. All graphs and plots can be saved as image files in a variety of formats.
Related software: algebra, algebraic, graphing, calculator, deviation, solve, triangles, simultaneous, linear, equations, regression, polynomial, roots, multivariate, nonlinear, polynomials, plot, navigation, algebraic graphing calculator, solve triangles, simultaneous linear equations, linear regression, polynomial regression, polynomial roots, multivariate regression, roots of polynomials, …

UltimaCalc is a scientific and mathematical calculator designed to occupy minimum screen area, making it immediately available for use. UltimaCalc can stay on top of other windows. Type a calculation as plain text, evaluate it, maybe edit it and re-calculate. Has a comprehensive context-sensitive help system.
Calculates to 38 digit precision. The display can be limited to just 8, 12 or 16 digits, and digits grouped for readability. Two 'scientific' view modes show numbers always in exponent format. The 'engineering' mode uses suffixes such as k (kilo) and M (mega). View results in hexadecimal and as ratios.
Functions available include logarithms to base 2, exp, two-argument inverse tangent; cube root (even of negative numbers); factorials, combinations, permutations, powers, modulus, GCD. Also floor and ceiling functions, absolute value, min, max, extract the fractional part of a number. Calculate the slope of a line given its end points. Even calculate definite integrals.
Define your own functions and constants, saved as a plain text file.
Find the date of Easter. Calculate future or past dates. Julian day numbers.
Calculate the mean, median and standard deviation of a sample and its population.
Create bar, line, pie charts. Add title, subtitle, labels. Adjust the layout, choose colours and hatching, save as an image.
Regression: Plot a scatter chart and regression line. Fit a polynomial to data. Analyse the effects of multiple variables on data. Absolute deviation fit minimises the effects of outlying values.
Plot functions: Specify starting and ending conditions and how variables change. Choose axis locations. Combine multiple plots. Save as an image.
Solve triangles: Given one side and two other facts, calculate the unknowns. View the result graphically.
Solve Simultaneous Linear Equations, and do Navigational calculations.
Log calculations to a text file, or copy and paste into other programs. Save specialised calculations with notes in data files.
Related software: calculator, graphing, create, charts, deviation, pie, solve, triangles, simultaneous, linear, equations, regression, polynomial, multivariate, roots, polynomials, plot, navigation, graphing calculator, create charts, pie charts, solve triangles, simultaneous linear equations, linear regression, polynomial regression, multivariate regression, roots of polynomials, …