The online content optimiser, Ramp has raised $15m in a C round led by Starvest Partners, bringing the total capital raised by the company to $40m.

Google Ventures has invested an undisclosed amount in maths start-up website Desmos.com, a site which allows user to plot graphs online

Electronic commerce and internet company Rakuten heads the B round of online marketplace site, Daily Grommet.

Signal information crowd-sourcing company OpenSignal has received $1.3m in seed funding from O'Reilly Alpha Tech Ventures, Passion Capital and Qualcomm Ventures for its signal-strength map app

Google acquires Nikon Corporation Japan backed software company Snapseed, an advanced photo editing app and rival to Instagram.

Cyber security company KEYW secures its second deal in under a week with the acquisition of SenSage. A deal worth upwards of $34.5m

Google Ventures is heading the Series A funding of online ad campaign creation website Republic Project.

The corporate venturing unit of Google leads the first round of funding for Turntable.fm chief executive's internet music start-up, DJZ.

In July, Nielsen set up an Israeli incubator in July with Bruce Haymes, senior vice-president of global business development and mergers and acquisitions at Nielsen, a board member.

The Flextronics International-backed human resources and finance software company plans to list ,after having raised about $265m in its history.