BolinOS is a modular publication and communication platform for Internet/Web development in order to enable simple management of complex portals. BolinOS is based on a data structure compatible with Sqeleton, Internet/Web operating system, and uses standard open-source software: PHP, Apache, mySQL. BolinOS was developed in order to offer a simple and efficient platform that could take in account the quality and diversity of today's multimedia. It is implemented and co-developed by Poinch.ch (www.poinch.ch - Swiss musical portal), the Radiology Department of Geneva's University Hospitals (www.radiologie.hcuge.ch), Med-IA (www.med-ia.ch - medical multimedia portal), with a major actor that has permitted the start of everything: Wild, first Swiss Web platform for the incubation of creators. Many functionalities already exist. For example, an integrated agenda, email portal, groups and forums managemnt systen create a basic applicative set of easily integrated and publishable online tools. There are also many more focused applications, such as multimedia albums, image collections, image manipulation applications or scientific poster making modules for online and paper publication. Many others are currently under development using the BolinOS framework.