Recently I started using Alfresco to manage my documents. The search capability in Alfresco is incredible. It does a full text search through all of my pfd documents and returns the results before I can lift my finger off the key. Here is a link to a page I found that talks about the technologies they used to accomplish this. They talk about the Top three technologies: Solr Cloud, Elastic Search & Amazon Cloud Services. And to build the solution it appears they used Apache Manifold CF - the Open Source project from Apache Software Foundation Framework.
This is all way over my head. I am just posting this suggestion in hopes that it will be of use to those who are of greater ability than myself; who may endeavor to take on such a task. If you can implement this search functionality I believe that this search feature alone would cause many to choose suiteCRM over sugarCRM CE. Thank you for your time and consideration.
http://www.zaizi.com/blog/the-next-search-generation-in-alfresco-is-here