What is an iPad app that will allow viewing AND editing/markup of PDF documents in multiple tab views? I need to find an ipad app that will allow users to do the following:


View PDFs
Edit PDFs (at least simple markups)
Open multiple PDF documents in tabbed views
Link with a DropBox account for cloud access


Anybody know of an app to do this?

Adobe Acrobat Reader is just fine except the markup tools are week and only one doc at a time.  BlueBeam allows great editing and multiple tabs, but is super buggy and slow.
Check out XODO.

It seems it will cover all your needs. I’m using it since the first version.