There are three codes available on this site. UCLCHEM is a gas-grain time-dependent chemical code. 3D-PDR is the first fully 3D code for PDR regions. For more simple models, a 1D version called UCLPDR is available. Links for each code are above and the individual pages for each code have full descriptions and links to the code repositories and manuals.
Support or Contact
Any site or UCLCHEM related questions can be directed to jrh at star.ucl.ac.uk