Mr Magee, 57, helped pioneer a tabloid approach to technology publishing when he co-founded IT news service the Register in 1994. But a split with fellow founder John Lettice led to his departure from that website in 2001.
Mr Magee subsequently launched the Inquirer, which prides itself on "news, reviews, facts and friction".
The website, which claims a readership of around 2 million visitors each month, focuses on the harder end of the technology industry, monitoring companies like Microsoft, Intel and Google.
"This deal is a great fit," said Mr Magee, who would not divulge any financial details involved in the deal. "But we've been profitable every year since we launched."