The Builder.au website has a new article about Zend's new struggles to find their business model in an open source world.

Open-source software company Zend Technologies, hoping to double its revenue this year, says it will narrow its focus to big business and Web 2.0-style start-ups, according to incoming CEO Harold Goldberg.

The article talks about the obvious routes (selling products to large facilities, governments, etc) but also in partnerships (IBM) and other yet to be discovered paths.