Other open-source geophysical packages

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The list below was assembled considering the official definition of the "open-source" term from the Open Source Initiative.

Comprehensive seismic processing suites

These suites include a wide range of algorithms and tools, covering most of the needs of a seismic data processing and imaging researcher at the time when they were developed.

Specialized tools

There are also other publicly available packages, with a smaller number of utilities than the ones described above, but each having unique capabilities, in its own way. Browsing SourceForge's Earth Sciences section may reveal others as well.

GPL-compatible licenses
Name What it is Written/maintained by License
SeismicLab Matlab toolbox that does preprocessing, imaging and plotting Mauricio Sacchi (U. of Alberta, Canada) GPL
SegyMAT toolbox to read and write SEG-Y data to and from Matlab and Octave Thomas Mejer Hansen (U. of Copenhagen, Denmark) LGPL
SegyPy Python port of SegyMAT same as SegyMAT LGPL
segy-py Python package for reading seismic SEGY files Kurt Schwehr (U. of New Hampshire) GPL
image2segy Matlab program to transform a raster image of a seismic paper or film record to SEGY. Uses SegyMat. Marcelli Farran (Institute of Marince Sciences, Barcelona, Spain) Creative Commons
GSEGYView cross-platform SEG-Y data viewer with OpenGL graphics hardware acceleration Vladimir Bashkardin (U. of Texas at Austin) GPL
kogeo MS-Windows only toolkit that features data processing, project databases, interpretation tools, 3-D header manipulation and good visualization tools Philipp Konerding (U. of Hamburg, Germany) GPL
qiWorkbench extensible Java-based platform for implementing integrated workflows to process, analyze and view seismic data, originally designed by BHP Billiton to implement its integrated workflows to process, analyze and view seismic data BHP, G&W, INT, CSM and CSIRO GPL; BSD for APIs in order to allow closed-source commercial plugins
Delivery Java-based Bayesian seismic inversion code for use in oil reservoir characterisation CSIRO Petroleum, Australia The copyright belongs to BHP Billiton and the package is distributed under a GPL+BSD license.
GeoBenchmark Benchmark for how fast computers are when working with seismic processing and imaging algorithms. More details in "Computers for seismic processing and imaging: a performance study", by E. Kurin, Proceedings of the 2007 SEG Annual Meeting, 2451-2454 Evgeny Kurin, Geolab Ltd. public domain
openGPR Linux framework for the processing and 2D/3D-visualization of GPR data. Based on Seismic Unix, Python and QT4. Inactive since 2007. Matthias Schuh, University of Tubingen, Germany GPL
Other/missing/ambiguous/GPL-incompatible licenses
Name What it is Written/maintained by License
CREWES Educational Software Release Matlab toolbox for seismic processing and imaging CREWES consortium (U. of Calgary, Canada) Free for non-commercial use
SW3D good-quality ray-theory based package SW3D consortium (Charles U., Czech Republic) Not specified
Jive3D forward-modelling and tomographic inversion package that is capable of modelling a wide range of seismic travel-time data types James Hobro (Cambridge U., UK) Free for noncommercial use or sponsors of the consortium
RayInvr package that does 2-D ray tracing, traveltime inversion, amplitude calculation and synthetics. Accompanied by a package called zplot for interactive plotting and picking of 2-D and 3-D wide-angle seismic data. Colin Zelt (Rice U., USA) Noncommercial use only
JRG Java-based basic reflection processing package with graphics, 3-d and crooked-line capabilities, SEG-Y and sound file I/O, and a GUI John Louie (U. of Nevada at Reno, USA) "The software and methods here are the subject of academic research, not commercial products. I would like to know what use you make of my methods, and have your feedback on their success or failure.". Also mention in the title that the package is open-source software.
Mines Java Toolkit set of Java packages and native (non-Java) code libraries for digital signal processing and 2-D and 3-D graphics Dave Hale (Colorado School of Mines, USA) Common Public License
IGeoS - Integrated GeoScience data analysis many seismic processing tasks in a wide range of geophysical, and ultimately geoscience data analysis. Igor Morozov (U. of Saskatchewan, Canada)

Free for noncommercial use; commercial license available