To accomplish its mission, Plassoft has established partnerships and alliances with companies and organisations linked to the Plastics and Software sectors.

InjePro software is supported by INP (Brazilian Plastics Institute), which is a technology institution that fosters the development of the Plastics sector in Brazil.

Plassoft´s international partnerships include WJT Associates, an american consultancy company in plastics technology, the Vlaams Kunststofcentrum, a technology center for the Plastics industry in Belgium, VMTech Co, a Korean developer of software, Editorial Costa Nogal, publisher of Revista Ingenieria Plastica in Uruguay and Mexico and Editorial Emma Fiorentino, publisher of magazines for the plastics segment in Argentina.

Plassoft worked in cooperation with the Belgium  VKC (Vlaams Kunststofcentrum) to translate InjePro into the Dutch language and to market the software in Belgium and the Netherlands.

Plassoft is also associated to SOFTEX Salvador, which is an entity linked to the network of SOFTEX Society and supported by the Brazilian Ministry of Science and Technology. SOFTEX Society has the objective to stimulate the exports of Brazilian Softwares.