NPM the company that is behind the javascript package manager of the same name recently raised $8 million, and is taking notes from github. Public repositories are free, but privacy will cost you. NPM has had over 51 million packages downloaded in the past 24 hours.
Today, the company is launching a somewhat similar (but hosted) service for any developer who wants to keep an npm module private. The concept is similar to how GitHub monetizes its service besides its enterprise offering. Just like on GitHub, projects in the npm repository are public by default. For $7 per month, developers can now keep their modules private and share access with other users who also pay for the service.