The HOOP Network of Cities and Regions is aimed at facilitating exchange of knowledge and mutual learning among cities and regions willing to recover valuable resources from urban biowaste and wastewater to make bio-based products.

This website contains over 700 Good Practices, 50 CE Strategies, 350 studies and report, 35 CE Toolkits and Guidelines, an online Forum called "Dialogue"and a list of over 150 European CE Networks. It also displays a map showing the location of each Good Practice, Strategy or Event.