Tech IPO value doubles to $12.3 billion in Q2

In the technology world, no question comes up more frequently these days than "Are we in a bubble?" And while it's not up to us at CNBC to answer that question, we do sometimes happen upon little nuggets—data, anecdotes, tweets and the occasional wild party that can possibly help others make their own assessments. When we do, we'll share them in an occasional column we're calling "Bubble watch?"

The number of technology companies going public just keeps climbing. And the deals just keep getting bigger.

Worldwide, 43 tech companies went public in the second quarter, raising a total of $12.3 billion, according to PWC's Global Technology IPO Review for Q2. That's a year-over-year increase of 153 percent and 327 percent, respectively.

In fact, during the first half of 2014 there were more companies going public across 10 countries and on 10 exchanges than there were in all of 2013.

There were 69 tech companies that went public during the first and second quarter as opposed to 64 that went public in all of 2013. There's also been more money raised from these IPOs than there was last year.

Read MoreTech IPOs not keeping up with funding surge

According to the report, tech firms that went public during the first half raised $19.1 billion, compared with $11.4 billion for all of 2013.

U.S.-based tech companies led the momentum with 15 firms going public and raising $4.1 billion in proceeds. That's an 88 percent increase year-over-year when proceeds from 12 IPOs totaled $2.2 billion.

Chinese tech IPOs are also gaining pace, though more are opting to list in foreign countries. Of the 14 Chinese companies that went public, nine listed in the U.S. and three listed in Hong Kong.

Check out the table below to see the top 10 IPO deals.

—By CNBC's Cadie Thompson