Question : Recommendations for web based document management, indexing, storage etc.

I have a client who wants to free up physical office space being occupied by boxes and boxes of documents. We are being contracted to scan them in to PDF (searchable). I am interested in hearing opinions about web based software that we can install on our servers to allow the client to search and retrieve their doc's over the Internet. I see some promising open-source projects on sf.net... What do you think?

Answer : Recommendations for web based document management, indexing, storage etc.

Yes alfresco is a good opensource option, other one is knowledgetree. http://www.knowledgetree.com/

If you are thinking on this on long term. You can try sharpeoint also. You can have customised portals developed for your clients.