In November last year, Vyatta raised $12m in its series D round taking its overall funding to more than $45m since 2005.

Private equity group Apax Partners and Comverse Technology, a provider of software and systems enabling network-based messaging and content services, sold Starhome to Fortissimo.

In September, Citi Ventures, the corporate venturing division of the US-based financial services corporation Citigroup, joined venture capital firms in Silver Tail's series B round.

News provider TechCrunch said the purchase price was $20m for WorldMate, which has more than 10 million travelers use the mobile application.

Crossing said its shareholders included Intel Capital, the corporate venturing unit of US-listed chipmaker Intel, and venture capital firm Tallwood Venture Capital.

BoSci said it would pay $90m initially and a further $175m in performance fees if targets were met over the next five years.

First Communication is a portfolio company of private equity firm Gores Group and New York-listed utility FirstEnergy.