Top 10 rankings: No. 6 for training "Work hard, play harder" is the unofficial motto at this Norwalk, Conn.-based vendor of backup and business continuity software. As an R&D-based company that has experienced a high rate of growth since it was founded in 2007, Datto is committed to investing in its IT staff with training and certification opportunities. The CEO hosts monthly meetings that serve as an open forum for all employees to hear company news, share plans and acknowledge their co-workers' accomplishments. Poker nights and "free lunch Fridays" give people a chance to socialize and maintain work/life balance.