SG-dev is an information sciences research and development private company. Started as independant in 2006, by Laurent Schmutz and Roger Gogniat, it has been capitalized and registered at the "registre du commerce Suisse" in 2008. Today, SG-dev is active in web applications development and web services. The domains of applications is large showing up competences in shipping (supply chain) as well as in medical (patient file, validation of med acts (i.e. Tarmed for Switzerland)), or intelligent assistance software for online trading systems. Our main competence is to understand your business model and to provide your own facilities in term of IT. The red line of our research is (still) semantic analysis of text, and in particular, relevancy evaluation of information! Research results are applied in Internet search engines as well as meta search engine.