I have been a huge fan of 37Signals project mangement tool Basecamp. 37Signals has completly overhalled the site. Unfortunilty all the third-party apps that I have used on my ipad now don't work.
Does anyone know if there is an app that works with the "New Basecamp"
I've not found an iPad-friendly version, but there are some iPhone ones that you can zoom to the iPad. I know that's not exactly your question, but it was hard enough to find the iPhone ones, so I hope this helps.
I've used Lodge. It's pretty good, but really wish it was on the iPad. The other is a new one I've not seen. Here's a good place to keep an eye out:
Hope this helps.