Connecticut Technology Council

Norwalk's Datto Wins Tech Top 40 Two Years Running

Norwalk's Datto Inc., a startup founded seven years ago by a man who's not yet 30, was the fastest-growing tech company, as measured by revenue growth, for the second year in a row.

The Marcum Tech Top 40 honors companies in software, Internet and telecom, energy, life sciences and advanced manufacturing who are headquartered in Connecticut. Companies disclose sales figures to the Connecticut Technology Council, and if they had at least $50,000 in revenue in 2009 and at least $3 million in 2013, they're eligible for the honors.

Twenty-eight private companies made the list, along with 12 publicly traded firms.

Datto reported that revenue in 2013 was $49 million, up from...