Two Newfoundland and Labrador companies have been named to the prestigious 2011 Deloitte Tech Fast 50, and a P.E.I. startup has been named a Company to Watch.

Marport Deep Sea Technologies of St. John’s placed 17^th on the list after its revenues increased 1131 percent over five years. And Verafin, which makes anti-fraud and anti-money-laundering software,  took the 27^th position with an 840 percent growth in revenues over a half-decade.

ScreenScape Networks, which customizes video screen displays for clients, was one of ten companies named to Deloitte’s Companies to Watch list, the first time an Atlantic Canadian company has won such an honour.

“We’ve worked very hard over the past two years to build ScreenScape into a global leader with a technology advantage in the rapidly growing area that we call Place-Based Marketing,” said the Charlottetown company in a release. “So, as a team we are proud to be recognized for our efforts by the pre-eminent technology awards program in Canada.”

ScreenScape, which recently named Gerry Pond to its board, received $6 million in funding in July from Hartco of Montreal.

Having launched more than eight years ago, Verafin booked its 700^th customer in July and is due to crack the 800-client mark this year, Brendan Brothers, a co-founder and head of technical sales, said in an interview. When I asked if that means the company’s growth is actually accelerating this year, he said it is.

“I think the reason for our success has been our focus,” he said, saying Verafin has concentrated on building clients among small and medium-sized banks in the U.S.

The company’s last fundraising was a $5.5 million round in September 2009 led by new investor RBC Venture Partners and including existing investors Killick Capital and Jamfin Inc., both of St. John’s. Brothers said Verafin is not seeking capital now.

Marport Deep Sea designs and develops Software Defined Sonar - a software-centric sonar architecture for use at sea.  The company in August announced that it has been named to the Marine Technology Reporter Top 100 list for the fourth year in a row.

Marport has also received VC backing, its most recent round being for an unspecified amount of money from Hasting Equity Partners and Admiralty Partners in January.