Whats the difference between CWIS and SPT (the Scout Portal Toolkit)?
CWIS and SPT are both designed to help put collections of information on the web, but CWIS is being developed specifically for use by collections developers who want to integrate their work into NSDL (the National Science Digital Library). Specifically, CWIS comes pre-packaged with the nsdl_dc schema (set of metadata fields) and GEM subject taxonomy, includes reference links to various NSDL-related resources, and includes a set of user interface themes specifically intended for STEM (Science, Technology, Engineering, and Math) sites. That said, there is no requirement that you take part in NSDL to use CWIS, but if you’re developing any sort of STEM-related collection, it is strongly encouraged. Taking part in NSDL will bring wider exposure to your work and help encourage continued development of CWIS and other useful software.