Researchers said seven out of 10 companies had reported an increase in sales - some by more than 50%.
The Scottish Technology Industry Survey also found that 82% of businesses were predicting sales to increase in 2017.
Predicted employment growth is also on the up, with 78% of firms expecting to employ more people this year.
This compares to 66% of firms that were expecting to hire more staff in 2016.
The digital technologies trade body, ScotlandIS, produced the annual survey.
Polly Purvis, chief executive of ScotlandIS, said: "The results of this year's survey show the confidence and resilience of the digital technologies industry which is continuing to grow and maintain its optimistic outlook despite uncertainties in the political environment.
"This is great news not just for our sector, but also for the economy as a whole. The digital technologies industry generates over Â£5bn in GVA [gross value added] for Scotland every year and is becoming more and more important in our increasingly digital world."
But ScotlandIS said a "skills shortage" remained an issue for many firms. For the first time since 2013, demand for experienced staff outstripped that for graduates.
Ms Purvis added: "Our survey shows that more companies are looking to Scotland to recruit new employees. This is likely to be a sign of Brexit-related concerns and the decreasing attractiveness of the UK for international talent."

The proposals include replacing the college grants with bursaries and creating one States-run secondary school spread across four sites.
The department has dismissed suggestions of closing one of its four secondary schools and called for the rebuild of two schools to go ahead.
The selective system was criticised in two reviews released in 2012.
Education Department proposals
The review of secondary education found a lack of accountability and called for the creation of school governing bodies, while in the primary sector it found reading ability had declined.
Education Minister Robert Sillars said: "[The 11 plus] is not an appropriate way to determine the future of our children's secondary education.
"It fails to deliver equality of opportunity, fairness or the sort of social mobility that was originally intended."
The written exams assess academic potential and help decide which pupils are offered places at the Grammar School or the grant-supported colleges.
Deputy Sillars said: "We have designed our own solution for Guernsey. We do not have to slavishly follow what they do elsewhere.
"We are aiming to keep what is good about our education system but address some of the problems of inequality and fairness presented by our current selective process."
The Treasury and Resources Department has questioned the lack of costings in the report and suggests the costs of an executive head teacher and increased transport spending would see costs rise to Â£3.5m above current levels.
It said there was an "absence of compelling evidence" the proposals offer value to the Guernsey taxpayer.
The department has previously advocated the closure of one secondary school and increasing the size of the other three.
The proposals will be debated by the States in March.
Scotland's digital technology industry enjoyed "sustained growth" in 2016 and is optimistic for the future, a survey has found.
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The 11 plus exam could end in 2019 under an overhaul of Guernsey's secondary education system.