Fityk

Fityk is a curve fitting and data analysis application, predominantly used to fit analytical, bell-shaped functions to experimental data. It is positioned to fill the gap between general plotting software and programs specific for one field, e.g. crystallography or XPS.
Originally, Fityk was developed to analyse powder diffraction data. It is also used in other fields that require peak analysis and peak-fitting, like chromatography or various kinds of spectroscopy.
Fityk is distributed under the terms of GNU General Public License, but since version 1.0.0, subscription is required for downloading binaries. It runs on GNU/Linux, Mac OS X, Microsoft Windows, FreeBSD and other platforms. It operates either as a command line program or with a graphical user interface.
It is written in C++, using wxWidgets, and providing bindings for Python and other scripting languages.
Versions 0.9.8 and older are free: downloads

Address : <http://fityk.nieto.pl/>
Address : <https://en.wikipedia.org/wiki/Fityk>

MagicPlot

MagicPlot is a technical plotting, curve fitting and data analysis application. It provides a wide usage of the graphical user interface for data exploration as well as various statistical analysis tools, peak fitting options, raster or vector formats of publishable plots.
MagicPlot is a commercial software. The limited functional trial version is also available.
MagicPlot Pro
Full-featured version
From $198 per computer
Free trial available

MagicPlot Student
Limited functionality
Free for personal and
educational use only
MagicPlotStudent.exe 1.8 MB
What is disabled here?
- Vector image export
- Custom fit equations
- Data processing
- Multiple axes
- Drawing
- Figure templates
- Batch processing

Graphic MagicPlot example

Review. An irreplaceable tool in the arsenal of any math student, researcher, scientist or engineer, MagicPlot Pro is a compact, powerful and efficient program for plotting, curve fitting and visual data analysis. Created by scientists for scientists, the software offers an unprecedented set of features and best-in-class flexibility for precise manual and automatic data analysis. A comprehensive set of graph editing tools makes it manifold easier to apply your creativity and knowledge, while a powerful multi-level undo/redo feature facilitates experiments and test fits, allowing you to make mistakes and roll-back to the previous step at any second. MagicPlot Pro supports export and import of values from CSV files via a convenient wizard with instant data preview, comes with a powerful integrated scientific calculator and automatically recalculates formulas following the updates of input data. This compact 2 MB program was written in Java and runs on any system with a Java virtual machine installed on it with no installation required. The program features a modern user interface supporting configurable opacity of all elements, Unicode encoding, ultra-fast rendering of complex graphs with no flickering, and simultaneous display of multiple anti-aliased graphs with thousands of dots. MagicPlot Pro offers nearly unlimited flexibility in exploring graphs, zooming in and out, scrolling, modifying data ranges and doing a lot more to get the job done faster.
   MagicPlot Pro is exactly what you need for convenient and efficient data analysis, non-linear curve fitting and plotting. Compact, fast and truly universal, this great tool will become your reliable aide for tasks of any complexity level.


Links
Address : <http://3d2f.com/smartreviews/1-790-magicplot-pro-an-all-in-one-plotting-and-visual-analysis-tool-for-researchers-and-engineers-read.shtml>
Address : <http://magicplot.com/>
Address : <https://en.wikipedia.org/wiki/MagicPlot>