It is advised for projects to have one application, this helps users to search a category and classification system so they can find the right project for their work. Furthermore, the project can be under up to three CCPs provided it is a collaboration. Each classification category will have sub-sections to filter the category further. CCPForge projects, such provide essential information which has been used in publications such as 'Recent developments in R-matrix applications to molecular processes' and 'Ab initio derivation of Hubbard models for cold atoms in optical lattices', in which codes from CCPQ were used.