The Decision support tool for decentralised biowaste management was prepared within the framework of DECISIVE. The tool aims at supporting the users in the selection of the most appropriate biowaste management option for a specific study zone. It is a web application (DECISIVE DST_V1) available at https://dst.decisive2020.eu/. The developers of the tool recommends to read the Deliverable D5.3. “User Manual of the DECISIVE decision support tool“ before using the tool. The latter describes the working procedure of the DST. The methodology behind the DECISIVE DST_V1 can be found in the deliverable D5.1 “Methodology for planning of decentralized biowaste management behind the Decision Support Tool”.