SharePoint WebPart/Custom Development: Wiki View with Versions

We need a SharePoint WebPart or other Custom Development that allows getting all items from a Wiki list including different Versions. Sharepoint Services allow accessing each previous version of an item in a version list, one item at a time. What we need is to access all versions of all items. Mandatory features are: - to be able to get all versions fo all items of a wiki list - get author name and date for each item version - get word count for wiki content, for each item version Optional features are: - get changes information for added and deleted content for each version: content summary and word count (valuable) - implementation in a WebPart - implementation in the form of a View - possibility to have any type of export (XML, Excel,...) or other possibility