The docBlock extends the SharePoint platform by providing a virtual document service to your farm, allowing you to create a master document in any document library as well as a hierarchy of document sections that can be updated separately by different individuals. This allows multiple people to edit and maintain the same document at the same time, without having to check in the document.  

SharePoint Zip

SharePoint Zip lets you transfer many files between SharePoint and your desktop as a single package. This saves you countless hours when working with a large number of files at once  - as you no longer have to download each file  individually. It saves you money by limiting the amount of bandwidth you use when transferring large or multiple documents.