From Office Efficiencies:
SafeSquid lets you, to throttle speed for low priority users or applications. You can use a variety of Antivirus Software like ClamAV and any other ICAP based antivirus to stop viruses before they reach the client systems. SafeSquid allows you to customize the various templates, which are displayed when access or content is denied to the user. SafeSquid's logs can be analyse to create a exhaustive user activity reports. It takes less than three minutes to install SafeSquid on a Linux based server. SafeSquid is backed by a very responsive and committed customer support. <\p>
What's new in this version:
Version 3.4.7 adds support for FTP over HTTP and security bugfix to prevent faulty bypassing of content analysis of requests.