Content filter termed to be the best way for a user either personal use or business one to have control over all of the access and thus maintaining the system in much efficient way. We provide you with the best open source content filter software.

1. Best Free Open Source
Content Filter Software
Content filter software for open source, also commonly known as
web filtering software, is software which is designed and optimized
to determine what content can be viewed by the user. This software
is particularly relevant to information supplied by a web browser.

2. In many respects, censorship of the internet is deemed to be
harmful. Governments with oppressive regimes may use
Content filter software to prevent their citizens from viewing
material they consider objectionable. This can mean the
censorship of perfectly legitimate websites including
organizations advocating human rights, or even search
engines such as Google. Even where a government has not
directly enforced internet censorship they may apply pressure
to internet providers to filter sites. Thus going for best content
filter software is the need.
Aspects of Content Filter

3. Best 5 Open Source Content Filter
Studies reveal the average employee spends 75 minutes per
day using office computers for non-business related activity,
costing employers thousands of dollars per year, per employee.
If you are a business owner, government agency or academic
institution, receiving blacklist updates may be required by law
(eg. CIPA) in order to meet certain government regulations

4. Dans Guardian
DansGuardian filters the content of
pages based on many methods
including phrase matching,
Platform for Internet Content
Selection (PICS) filtering and URL
filtering. It does not purely filter
based on a banned list of sites.

5. Web Content Control
WebContentControl is software which
enables parents to prevent their
children from browsing certain
websites. It provides a graphical user
interface written in Gambas which
installs and configures DansGuardian,
FireHol and TinyProxy. It is user friendly
software, and offers good functionality.

6. Privoxy
Privoxy (Privacy Enhancing Proxy) is a
non-caching Web proxy with advanced
filtering capabilities for enhancing
privacy, modifying web page data and
HTTP headers, controlling access, and
removing ads and other obnoxious
Internet junk

7. Web Cleaner
WebCleaner is a filtering HTTP proxy. It
removes adverts, compresses
documents, deanimates GIFs, can use
SquidGuard filter lists, and more. It is
easy to configure with a web interface.

8. Gnome Nanny
Gnome Nanny is an easy way to control
what your kids are doing in the computer.
You can limit how much time a day each
one of them is browsing the web, chatting
or doing email. You can also decide at
which times of the day the can do this
things.