Ontolica Aggregate is a virtual library solution for SharePoint that provides functionality to present views of documents from entire SharePoint farm and also from external content sources indexed by SharePoint. By default Ontolica Aggregate Center displays documents from document libraries residing in all Web applications in a farm. But you can configure it to show all content from all Web applications and also from external content sources. Results can also be filtered to show documents from certain Web application(s), site collections or even sites. Furthermore, by using fixed queries you can configure Ontolica Aggregate Center to display documents, for example, only with a certain fileextension or by a certain author, etc. Although the Ontolica Aggregate is a part of the Ontolica Search solution, it is a separate product. To be able to use the Ontolica Aggregate you will need a license that supports this product.