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 Datto is still the fastest-growing technology company in Connecticut.

The Norwalk-based data-backup and disaster-recovery provider was named the overall winner of the Marcum Tech Top 40 for the second consecutive year. The annual event honors the 40 fastest growing technology companies in the state, narrowing down winners in six categories: Software, New Media/Internet/Telecom, Life Sciences, Energy/Environmental Technologies, Advanced Manufacturing and IT Services.

Datto was the overall winner as well as the winner in the IT Services category, posting overall revenue growth of 1,436 percent since 2010.

Middlebury-based global payment service iSend, which allows people living or working abroad to send bill payments and gift cards to family members back home, took top honors in the New Media/Internet/Telecom category, also for the second year in a row, with 675 percent revenue growth over four years.

Other winners included Revolution Lighting Technologies (Stamford, Advanced Manufacturing), FuelCell Energy (Danbury, Energy/Environmental), Alexion Pharmaceuticals (Cheshire, Life Sciences), and Square 9 Softworks (New Haven, Software), which beat out 13 other companies in the running with 448 percent four-year revenue growth.

For consideration for the Marcum Tech Top 40, companies must have at least $3 million in annual revenue and demonstrate growth over the previous four years. The Top 40 is a joint effort from the Connecticut Technology Council and investment firm Marcum, LLP.

Other area companies that made the Top 40 include: APS Technology (Advanced Manufacturing, Wallingford), Proton OnSite (Energy/Environmental, Wallingford), Cervalis (IT Services, Shelton), Bio-Med Devices (Life Sciences, Guilford), HealthPlanOne (New Media, Shelton), Reality Interactive (New Media, Middletown), Clarity Software Solutions (Software, Madison), Core Informatics (Software, Branford), Fitlinxx (Software, Shelton), Higher One (Software, New Haven) and Tangoe (Software, Orange).