Joyent, a San Francisco tech firm that offers several cloud products and is sponsoring the Node.js project, raised $5 million in fresh funding according to an SEC filing picked up by TechCrunch. To date the seven year-old company raised $30 million in venture capital, thanks to a line-up of offerings that covers a lot of ground in the cloud space.

The company, which was founded back in 2004, offers an integrated technology suite and related services geared towards service providers, medium-sized and large enterprises, and developers.

These include its SmartDataCenter cloud suite and JoyentCloud.com, a public cloud service competing with Amazon Web Services. Earlier this month the company gave JoyentCloud.com a major boost by adding support for Linux and Windows.  Previously customers had to rewrite their apps to run on the firm’s SmartOS platform (which it offers separately, to exist under an open-source license as of August), so this is a major step up: not only it will cut development costs for users, but now the platform is available to a whole new audience of customers.

Platform-as-a-service provides companies, as well as independent developers with an economic pay-as-you-go way to run their apps, which is why Joyent has a lot of competition.

The Salesforce.com-owned Heroku, a PaaS provider, took the same approach with its public cloud by extending support to Scala. Heroku VP of Product Oren Teich told Jeff Kelly that this is all thanks to an agreement with Typesafe, co-founded by Scala creator Martin Odersk. This news came about a week after it introduced Java support.

Microsoft has also been working around its own PaaS, Azure. One of the latest updates is the launch of a toolkit for Android, a competitor of its own Windows Phone 7 mobile OS.