On February 7th, 2006. portal of Croatian scientific journals called Hrcak was released and introduced to the public. It is celebrating its 5th birthday. Hrcak is the central portal of Croatian scientific journals. Hrcak offers the access to the journals following the Open Access Initiative. This portal is developed and supported by the Ministry of Science Education and Sports, developed and maintained by the University Computing Centre and was initiated by the Croatian Information and Documentation Society. HRČAK is now a reference source of information that gathers more than 230 journals and provides access to over 4300 numbers with over 58 000 papers freely available in full text via http://hrcak.srce.hr.