ContentBarrier 10.9.27 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. ContentBarrier for Mac lies within Security Tools, more precisely Mac protection. This software for Mac OS X is a product of Intego.
From the developer:
ContentBarrier is a parental control program for Mac, providing functions for parents and businesses. It is designed to filter and block certain Internet content according to the settings you choose. ContentBarrier 10.6 blocks adult web sites, sites with subjects not fit for children, and blocks chats when predatory language is used.
You may want to check out more software for Mac, such as TXTcrypt, Kaspersky Virus Scanner or Cloud Spy Svr, which might be similar to ContentBarrier.