PORIN d.o.o. Rijeka, in full called the "Rijeka Entrepreneurial Incubator", is a trading company dealing in research, development and other business activities involved in developing entrepreneurial incubator systems, foremostly in Rijeka, and if required, on a larger scale on the County level and throughout Croatia. The founders of Porin d.o.o. are: the Town of Rijeka, with a capital share of 61.5% the Riadria bank d.d. Rijeka, with a capital share of 32.25% the County of the Coast and Gorski Kotar, with a capital share of 6.25%.

The "Rijeka Entrepreneurial Incubator" provides its entrepreneurs foremostly with premises, administrative and business support, while the Town of Rijeka provides financial support in the form of specified-purpose entrepreneurial loans for the acquisition of fixed assets required for the production of their products. All the members of the entrepreneurial incubator have been granted favourable interest-free long-term loans. The incubator members do not need to set aside funds for purchasing telephones, faxes, PC-s or similar office equipment, as this equipment, as well as a secretary, is at their disposal at the incubator head offices at a fee for services rendered.