EasyCatalog is an Adobe InDesign plugin, that is used to create product catalogs, brochures, directories, etc. It allows to automate content assembly and layout originating from a data source. When it comes to product catalogs, the best practice is to connect EasyCatalog to a PIM solution. This synchronisation allows to easily import data in InDesign from a unique data source, but also make last-minute modifications, as the updates between these two tools are made in real time.
More information about EasyCatalog on :
https://www.65bit.com/software/easycatalog/