The 19 biggest European tech venture capital firms [ranked]

European tech is heating up: In 2014, 13 startups became "unicorns," with valuations of $1 billion or more. It's a huge jump from just a year before, which saw the birth of only three of the mythical creatures.

Fueling this growth is an ambitious collection of European venture capital funds, investing capital into the ecosystem in the hopes of getting in on the ground floor of the next Spotify or Skype - as well as looking at other sectors, including health-tech, energy, and more traditional business.

With the help of venture capital tracking company CB Insights, Business Insider has ranked the biggest European funds raised since 2010, by size.