Gwyddion (software)

Gwyddion

Original author(s)	David Nečas (Yeti), Petr Klapetek
Developer(s)	Czech Metrology Institute
Initial release	2 March 2004 (preview version 0.99.1).
Stable release	2.66 (May 24, 2024; 5 months ago (2024-05-24)) [±]
Preview release	Non [±]
Repository	svn.code.sf.net/p/gwyddion/code
Written in	C
Operating system	Cross-platform
Available in	English
Type	SPM Data Analysis Program
License	GPL (Free software)
Website	gwyddion.net

Gwyddion is a multiplatform modular free software for visualization and analysis of data from scanning probe microscopy (SPM) techniques (like AFM, MFM, STM, SNOM/NSOM).^[1] The project is led by its main developers David Nečas (Yeti) and Petr Klapetek who work together with several various developers across the world. The software is made available as free software under the terms of the GNU General Public License. The name “Gwyddion” is that of a prominent god of Welsh Mythology, see Gwydion

It is created for the analysis of height fields and other 2D (image) data. While it is primarily intended for data originating from scanning probe microscopy techniques (like AFM, MFM, STM, SNOM/NSOM), it may also be used for the analysis of profilometry data, for instance. Data is calculated and stored in the native file format (.gwy) in double precision.

Gwyddion supports many different file types and performs many image-based functions. Among others it can open and save the following graphics file formats:

• Windows bitmap (.bmp)
• Joint Photographic Experts Group (.jpeg, .jpg, or .jpe)
• Portable Network Graphics (.png)
• TARGA (.tga)
• Tagged image file format (.tiff, .tif)
• Portable aNy Map (.pnm)^[2]