This research aims to manage biomass raw materials in line with industrial needs by developing a platform that links stakeholders in the rubberwood biomass supply chain in southern Thailand. Geographic Information System (GIS) technology was applied to build a database and estimate rubber plantation areas. The trees were grouped by age into three categories: 14–20, 21–27, and over 27 years. The platform also provides information on garden and factory locations, including sawmills, rubberwood processing plants, biomass production plants, and biomass power plants in 14 southern provinces. The system, available on Android and iOS, supports users in making decisions about transportation costs such as distance, time, and fuel. Results from the technology transfer show that the platform is practical, matches user requirements, and is used effectively. The average user satisfaction scores were 4.538 for function and 4.504 for overall use, reflecting the platform’s usefulness and acceptance among stakeholders.
