OpSource, provider of software-as-a-service and web applications for a variety of functions, just raked in $10 million in fifth-round funding from Nippon Telegraph and Telephone (NTT), Velocity Venture Capital, Key Venture Partners, Crosslink Capital and Artiman Ventures to continue expanding its software portfolio. Its flagship product, called OpSource On-Demand, lets application developers automatically deliver their own products to clients without investing in the expensive infrastructure usually required to deploy them.

The Santa Clara, Calif.-based company also offers related services, including billing, analytics and user support software. It has now raised $56.5 million to date, including past funds from Intel Capital.