Ruder Boskovic Institute, Zagreb
- The premier Croatian scientific institution. Site include informations about RBI, structure, news and site map.
- http://www.irb.hr/

Histria
- The main idea of this web site is making a place on the web in order to spread knowledge about history and medical history in Southern Istria.
- http://www.histria.org

Neandertals from Husnjakovo hill in Krapina
- This archaeological find is among the richest resources of Neanderthal artifacts in the world. Includes photos and descriptions of archaeological finds.
- http://www.krapina.com/neandertals/index_en.htm

Institute of Physics
- Devoted to basic research in the fields of physics of atoms, molecules and plasma and solid state physics including surface science.
- http://www.ifs.hr/en/

Hydrographic Institute of the Republic of Croatia
- Nautical charts and publications, hydrographic survey, sailing directions, notices to mariners, Morse's signals, radio service, hydrography and oceanography.
- http://www.hhi.hr/

Croatian Academy of Sciences and Arts
- Information about departments, education, activities and history.
- http://mahazu.hazu.hr/ENG/indexENG.html