# Open-Silicon
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{{Infobox company
| name = Open-Silicon
| type =
| industry = [Semiconductors](/source/Semiconductors)
| foundation = {{Start date |2003 }}
| founders = Dr. Naveed Sherwani, Dr. Satya Gupta, Scott Houghton
| location_city = [Milpitas, California](/source/Milpitas%2C_California)
| location_country = [United States](/source/United_States)
| products = [ASICs](/source/Application-specific_integrated_circuit), [system-on-a-chip](/source/system-on-a-chip), [integrated circuit](/source/integrated_circuit)s
| num_employees = 400
| num_employees_year = 2013
| homepage = {{webarchive |url=https://web.archive.org/web/20090317072532/http://www.open-silicon.com/ |date=March 17, 2009 |title=www.open-silicon.com }}
}}
'''Open-Silicon''' was an American semiconductor company based in California that was founded in 2003. The company was a [fabless semiconductor company](/source/fabless_semiconductor_company) that focused on custom [system on chip](/source/System_on_a_chip) (SoC) designs.
Open-Silicon was acquired by [SiFive](/source/SiFive) in September 2021 and was renamed as OpenFive. The unit was subsequently sold by SiFive in March 2022 to Alphawave Semi.[{{cite news |url=https://www.datacenterdynamics.com/en/news/alphawave-acquires-sifives-openfive-business-for-210-million/ |title=Alphawave acquires SiFive’s OpenFive business for $210 million |date=March 14, 2022 |publisher=Data Center Dynamics }}]
==Corporate history==
Open-Silicon was founded in 2003 by Naveed Sherwani, Satya Gupta and Scott Houghton. Initial funding was provided by [Sequoia Capital](/source/Sequoia_Capital), [Norwest Venture Partners](/source/Norwest_Venture_Partners), and ''InterWest Partners''.[{{cite web|url=http://www.open-silicon.com/company/news-events/press-releases/initial-funding/|archive-url=https://archive.today/20130130194605/http://www.open-silicon.com/company/news-events/press-releases/initial-funding/|url-status=dead|archive-date=January 30, 2013|title=Open-Silicon Inc. Secures $19.5 Million in Funding|date=March 29, 2004}}] In December 2007 ''Unicorn Investment Bank'' acquired 75% of Open-Silicon for $190M, with the rest of the company employee-owned.[{{cite web|url=http://www.eetimes.com/rss/showArticle.jhtml?articleID=205201890&cid=RSSfeed_eetimes_newsRSS|title=Bahrain Bank Buys Stake in Open-Silicon|date=December 24, 2007}}]
In May 2007, Open-Silicon acquired Zenasis Technologies, a maker of processor optimization [EDA software](/source/Electronic_design_automation).[{{cite web|url=http://www.edn.com/article/459760-Open_Silicon_acquires_Zenasis_hybrid_optimization_technology.php|archive-url=https://archive.today/20120730005431/http://www.edn.com/article/459760-Open_Silicon_acquires_Zenasis_hybrid_optimization_technology.php|url-status=dead|archive-date=July 30, 2012|title=Open-Silicon Acquires Zenasis Hybrid Optimization Technology|date=May 7, 2007}}] This technology has also been expanded by Open-Silicon to focus on low power design and process variability management.[{{cite web|url=http://www.edn.com/blog/Practical_Chip_Design/37523-When_an_ASIC_vendor_partners_with_an_EDA_vendor_a_new_model.php|archive-url=https://archive.today/20120731043046/http://www.edn.com/blog/Practical_Chip_Design/37523-When_an_ASIC_vendor_partners_with_an_EDA_vendor_a_new_model.php|url-status=dead|archive-date=July 31, 2012|title=When an ASIC Vendor Partners with an EDA Vendor: A New Model|date=November 12, 2008}}]
In 2009 Open-Silicon acquired design services firm Silicon Logic Engineering (SLE). This acquisition has enhanced the company's derivative [IC design](/source/IC_design) capabilities.[{{cite web|url=https://www.eetimes.com/open-silicon-acquires-design-services-firm/|title=Open-Silicon Acquires Design Services Firm|date=January 12, 2010}}] In 2010 the company opened new facilities in [Research Triangle Park](/source/Research_Triangle_Park), [North Carolina](/source/North_Carolina), and [Pune](/source/Pune), India, to provide additional support for derivative IC design.
Open-Silicon's business model for its ASIC development process was called the OpenMODEL.[{{cite web|url=https://www.eetimes.com/open-silicon-thriving-and-hiring-in-downturn/|title=Open Silicon thriving and hiring in downturn|date=January 12, 2009}}]