Kofax Capture Comes with Intelligent Character Recognition , it can read through the images which has been uploaded and check against the text which is not good to be uploaded . If there is some stuff which is not good to be upload after checking it against the restricted words and thus fail the document form loading and creating a work item to be reviewed by Web site admin . I think this should be vary helpful.

Content filter software related details attached here.

we can easily filter all this kind of sensitive posts made by public by a particular MULTI-CRITERIA DECISION MAKING ALGORITHM....if suppose if there is any issue a particular personnel incharge will scrutinize it.

http://www.laptopmag.com/best-internet-filter-software/net-nanny-parental-controls-review
here its a link for D given database.

K9 (Windows/Mac, Free) :
K9 is one of the content filtering software for internet.
One of K9's strong points is the division of filtered content into 60+ categories which allows you to easily block and unblock large chunks of their blacklist without having to get your hands too dirty. K9 is a desktop solution; you install the software and it checks all the internet requests you make against the filters you have specified.
K9 introduced Dynamic Real-Time Rating.

https://www.opendns.com/

OpenDNS is a perfect solution for people who either lack the time or expertise to set up and administer a full-out content-filtering server. OpenDNS replaces your current DNS server and allows you to filter every connection coming out of your house if you change the DNS settings at the router level. No matter if someone is on your main desktop or connecting into your wireless via laptop, everything will be filtered by OpenDNS. You can set custom filters to white list

online website must be you block some keywords then after be filter so its first add all analysis data as like that to filter first time then after that type of filter and auto block not viewing public ....... not a particular software because then be use third party software its not be safe for website user data so ... must be use open source software source code and customize it and add with this website then be work well

There exists proprietary software developed by M/S Excys Inc. EXCYS CORVID which allows for rule based content development as well as filtering where conventional coding is not required.

IBM DATA STUDIO & SQL MANAGER TOOL may help

http://www.integrity.com/services.php
i think above link can help