Also today, the startup is launching Private Modules, a premium service for handling proprietary bits of code.
The launch of Private Modules follows the release of the on-premises Npm Enterprise software last year. More than 2,000 developers have signed up to try out the new service, the startup said in a statement. Private Modules will cost $7 per person per month.
Bessemer Venture Partners led the new round. True Ventures also participated.
To date, the Oakland, California-based Npm Inc. has raised $10.6 million, including last year’s $2.6 million seed round. Eleven people work at the startup, a spokeswoman told VentureBeat in an email.
Companies that use the Npm technology include Amazon, Google, Microsoft, New Relic, and Twilio, according to today’s statement.