BIRA-IASB doesn't take registration requests anymore. QDOAS is now part of the Atmospheric Toolbox.

Ready-for-use QDOAS packages are available for Windows, linux or macOS operating systems. They can be installed using anaconda with the conda-forge channel.

See https://anaconda.org/conda-forge/qdoas, or run 'conda install -c conda-forge qdoas'.

For questions and support, you may contact us using the Atmospheric toolbox forum at
https://forum.atmospherictoolbox.org.

In case you need to compile from source, the most recent sources are available on github :
https://github.com/UVVIS-BIRA-IASB/qdoas