Accel Partners was founded in 1983 by Arthur Patterson and Jim Swartz.
In 2000, Accel entered into a joint-venture with Kohlberg Kravis Roberts to form Accel-KKR a technology-focused private equity investment firm focused on control investments of middle-market companies.
In addition to Accel's continued investments in early-stage startups from the Accel X early stage fund, Accel announced its $480 million growth fund in December 2008. This fund has focused on growth equity opportunities across sectors including: information technology, internet, digital media, mobile, networking, software, and services.
In April 2009, Sukhinder Singh Cassidy, formerly Google's president for Asia-Pacific and Latin American operations, became a CEO-in-residence.
Founder of RealNetworks, Rob Glaser joined Accel in June 2010, focusing on digital media technology, social media, and mobile services.