RTV Drawing Manager helps track and record drawings associated with a project. It is part of a crowded field of CAD document managers (Autodesk lists 60 of them on their partner site page) the RTV product is one of the few that are specifically for Revit.
A single license costs $255, and includes one year of support.
RTV Xporter can batch output PDFs. RTV Xporter starts at $9.99 and the Pro version costs $49. RTV Tools also offers corporate-wide licensing, which can bring down the cost of each license depending on the number of users.