At first glance, OpenStack is an open source platform for service providers and Eucalyptus is an open source platform for private clouds. But if you listen closely to vendors in the market, some folks think OpenStack and Eucalyptus will wind up competing for the hearts and minds of cloud integrators and service providers.

Publicly, Eucalyptus Systems CEO Marten Mickos says OpenStack and Eucalyptus appeal to different types of users. But if you really push some of the partners within the OpenStack community, they see OpenStack potentially competing with Eucalyptus.

Either way, vendors are starting to hedge their bets and promote both platforms. A prime example: Canonical, promoter of Ubuntu Linux, has been a vocal proponent of Eucalyptus. But in recent months, Canonical has also been making lots of noise about OpenStack.