Best plotting 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.
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Delphi/C++ Builder VCL components library for very easy and fast Data Visualization. Allows very fast display in a Plot/Scope/Chart or Waterfall form. Great for FFT Visualization! Free for non-commercial use.
Related software: chart, scope, plot, waterfall, plotting, …

AutoCAD DWG drawing viewer with markup, plotting, rendering, PDF output! High precision measuring, zoom. pan, all the features you need to review your AutoCAD drawings and output them to paper. Easy to use,
Related software: cad, autocad, intellicad, progesoft, progecad, archt, architectural, mechanical, civil, survey, solidworks, ptc, turbocad, …

Grapholic is an extremely useful tool for maximizing data visualization. You can convert your raw data into meaningful Graphs in just a few clicks. The simple steps you follow are Import, plot, modify and export to get your data in graphical form.
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FindGraph is a comprehensive graphing, curve fitting, and digitizing tool. FindGraph offers 12 generic fits, including linear regression, logistic functions, fourier approximation, neural networks, B-splines and parametric curves least squares approximations, plus a library of over 300 industry-specific 2D formulas. FindGraph uses the Levenberg - Marquardt non-linear algorithm and the Simplex algorithm to fit data. A built-in Wizard helps to apply different curve fits to discover the model that best describes the data. Peak fitting features are included. The latest version includes a feature that applies Singular Spectrum Analysis (SSA) to reconstruct and to forecast data series. The software enables you to smooth, interpolate, apply FFT and Wavelet filters, subtract, differentiate, integrate, transform data and curves, and to apply Procrustes analysis. The program comes with 200 built-in common graphing 2D functions support for polar, Cartesian, and parametric equations. A built-in Wizard helps to digitize the data. The program supports OLE automation and can be built-in to other software applications.
Related software: math, graph, curve, fitting, equation, chart, plotting, visualize, digitizing, drawing, spline, parametric, approximation, regression, logistic, data, analysis, interpolate, b-spline, data-analysis, …

ecGraph is a powerful graphing ActiveX control that you can drop into your Visual Basic programs to create graphs in a huge range of styles. Great for scientific or technical graphs. You can get a graph up and running with just a few lines of code, and can manipulate the graph layout at runtime from your programs.
* Easily create scientific or engineering graphs within your VB applications
* Multiple graphs per page
* Click and drag to move or resize graphs on the page
* Zoom and scroll areas of the graphs
* Multiple x- and y-axes per graph
* Log or linear scales on axes
* Plot data points, bars, text
* Plot continuous math functions like y = sin(x)*exp(-x/10)
* Plot data points against math functions, with vertical or horizontal optional error bars
* Configurable grid lines, tick marks, borders, backgrounds
* Legend tables, reverse axes, show/hide labels, transparent backgrounds
* Demo projects supplied to show how all the features work
* Project1 - simple viewer to load and display the demo graphs and the VB code used to generate them.
* Project 2 - comprehensive graph editing program, loads the demo graphs and lets you edit them on screen
* Hundreds of other features
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PlotLab is a set of Visual C++ components for very easy and fast Data Visualization. The library includes: Scope - scientific chart component for plotting multi-channel data. Waterfall - data plotting component, especially suitable for FFT results. The components allow zooming, navigation, direct printing, clipboard copy, save to file and more. All of the components are optimized for very fast data plotting, and support multithreading. MultiWaterfall - multi channel waterfall component. Especially suitable for video color histogram results.
Free for non-commercial use.
Related software: chart, scope, plot, waterfall, plotting, …

DPlot is a general purpose graphing program designed for scientists, engineers, and students. It features multiple scaling types, including linear, logarithmic, and probability scales, as well as several special purpose graphs: tripartite grids (shock spectra), grain size distribution plots, polar plots, contour plots of 3D data, and box-and-whisker plots and dot graphs of one or more 1D samples. Manipulation functions include FFT, filtering, and smoothing. Data can be input via file, copied from the clipboard, generated by an equation within DPlot, sent to DPlot from Excel via the supplied Add-In, or sent to DPlot via dynamic data exchange. Source code for example Visual Basic and C demo driver programs are included.
Related software: dplot, fft, data, filtering, plotting, graph, math, science, engineering, data filtering, …

Are you tired of opening and plotting each and every AutoCAD drawing and do you work like a robot repeating the same process of open-plot-close, open-plot-close... on all your drawings?

Then dwgPlotX is here to your rescue. Just select all the AutoCAD files you want to print, set all the parameters and click Plot. By the time you're finished with your snacks, all the selected drawings would have plotted to your satisfaction.

dwgPlotX features an easy windows explorer style user interface where you can select multiple folders, individual files or search all the subfolders for the dwg drawing files. You have plotter and paper selection available from the ones present on your system-which it automatically scans for , and also option for setting the plot rotation and the plot style table.

It has extensive batch plotting options like setting number of copies of each drawing to be plotted,setting if all layouts are to be plotted (and whether to include the Modelspace) and setting the number of times the whole batch has to be repeated - for those multiple copies .

In addition to plotting the drawings (.dwg), dwgPlotX also fetures a great bulk replacement option for both normal and block text strings strings enabling you to change that author info or any other information in multiples drawings at once. Furthermore, it can also export the dwg files to EPS, BMP, WMF, DXF formats. By selecting appropriate plotters - already available with AutoCAD, the dwg files can be easily converted to JPG or PDF or DWF formats with a button click.

dwgPlotX is an indispensable drawing office tool which can increase the drawing office productivity by leaps and bounds by sparing precious mahours which could surely be utilized for more productive work.
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WirelessMon 2.0 enables a person to detect and monitor Access Points (AP) on any wireless (WiFi) networks within range. The program provides substantial information regarding each SSID it locates including whether the AP is secure (or not) and its availability for use.

A live 'channel usage' chart provides information on the level of traffic for each available channel. This information will assist network managers by indicating channels that could be used to reduce interference and improve throughput.

Users of the Professional Edition will have the additional bonus of being able to generate 'coverage maps' based upon the signal strength of all detected APs. To use this function, users need to import a map created by an another application (e.g. scanning). Once the map is loaded, users can either plot points manually on the map, or use a Global Positioning System (GPS) device. If done manually, the user selects a point on the map and the program automatically stores information on every AP it can detect there. GPS users need to establish two reference points, then they can leave it to the program to detect their location on the map and store the AP information for each point.

Network managers, laptop users and wardrivers will all find WirelessMon 2.0 to be the perfect tool for their wireless network requirements.
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PlotLab is a set of .NET 2.0 components for very easy and fast Data Visualization. The library includes: Scope - scientific chart component for plotting multi-channel data. Waterfall - data plotting component, especially suitable for FFT results. The components allow zooming, navigation, direct printing, clipboard copy, save to file and more. All of the components are optimized for very fast data plotting, and support multithreading. MultiWaterfall - multi channel waterfall component. Especially suitable for video color histogram results.
Free for non-commercial use.
Related software: chart, scope, plot, waterfall, plotting, …