Recommend wpmudev resources for intranets

I need some advice please. I've used WordPress for a few years and built our company's intranet with it. I am looking for Intranet Themes and Plug Ins that would help me improve the site - so that it looks and feels more like an intranet than a blog. I know there are complete packages outside of wpmudev but they are prohibitively expensive.

I feel certain there are resources on wmpudev that would help me accomplish my goal. Can you point me in the right direction please? Thank you very much.