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The European Space Agency is making NEST available free of charge to the user community

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The NEST software and full source code is distributed freely under the GNU GPL license.

Open source makes software inherently independent of specific vendors, programmers and suppliers. The software can be freely distributed and shared by large communities including the source code and the right to modify it. This ensures that there isn't a single entity on which the future of the software depends on and allows for unlimited improvements and tuning of the quality and functionality of the software.

By making NEST open source, future evolution and growth of the toolbox will be possible by the community of users and developers that contribute back to the project.

Contributing to NEST

You could contribute bug fixes or new features in demand by the SAR community.

If you would like to develop a feature yourself, the easiest way to contribute to NEST is to create a new module for a reader, writer or operator.

The new module will need to be licensed as GPL and not contain any non-GPL dependencies.

Zip the module including test code and contact us via ESA EO Support. You can then email us and we will examine the code and integrate it into NEST.

If the contribution is a fix or enhancement of the NEST core code, then you could either email us the modified code or using diff tools you could create a patch.

Please note that NEST is still in full development and parts of the API may change over time.

Non-coding contributions are also welcome in the form of tutorials, documentation, SAR expertise, algorithms, or just spreading the word.