OPEN Silicon Valley | 19,587 followers on LinkedIn. AN ENTREPRENEURIAL COMMUNITY. AN ADVISORY NETWORK. AN EDUCATIONAL HUB | OPEN is a volunteer run nonprofit, focused primarily on the promotion of entrepreneurship and professional development. OPEN Silicon Valley community is several thousand-strong, and includes corporate professionals, entrepreneurs, venture capitalists and banking professionals, social leaders, academics and students. OPEN Silicon Valley promotes entrepreneurship through regular mentorship and networking initiatives.