•  Software Business Cluster (SBC) supports innovative early-stage technology entrepreneurs by providing access to resources, professional network, and business services. The SBC has graduated over 100 startup companies including Agile Software, TelConTar and Callidus Software. The SBC has assisted its clients in raising more than $550 million in equity funding. www.sjsbc.org

•  San Jose BioCenter (SJBC) offers state-of-the-art wet labs, dry lab and office suites with access to common areas that give early-stage high potential bio-convergence companies that "big company advantage." The BioCenter supports client companies that develop solutions in nanotechnology, drug development, medical devices, bioinformatics, biophotonics and diagnostics. www.sjbiocenter.com

•  Environmental Business Cluster (EBC) assists start-ups that make environmental products or provide environmental services; 80% of which are clean and renewable energy companies. The EBC has graduated 75 companies whose technologies solve serious environmental problems including reliance on foreign oil. The EBC provides incubation and consulting services to California Energy Commission research grant recipients and technology commercialization assistance to government grant-funded research scientists. www.environmentalcluster.org

•  US Market Access Center (US MAC) attracts to San Jose successful international firms who want to expand their market reach to the United States . The US MAC provides full service US headquarter office facilities to well-funded, foreign-based market leaders in the information technology, life science, and solar/renewable energy industries. The US MAC also provides consulting services to these foreign-based companies to help them understand the US market, as well as provides qualified business introductions, market awareness campaigns, and outsourced sales. www.usmarketaccess.com