Entrepreneurs Roundtable Accelerator (aka ER Accelerator, or ERA) is an American seed accelerator launched in January 2011. ERA runs two four-month startup accelerator programs per year, the first starting in January ("winter program") and the second starting in June ("summer program"). By analogy to education terminology, candidates for each semiannual accelerator program are called "applicants". The group of startup companies admitted into each semiannual cohort are collectively referred to as a "class". Startups that successfully graduate the accelerator program are called "alumni".