Cyan Secure Web Proxy Server is a carrier grade, high performance Internet filtering proxy server for Linux. It includes scalable (user/group/host) Web filter and virus scan utilities for blocking malicious applications at the gateway. It has an advanced URL database, authentication support (Active Directory, LDAP, NTLM), SSL Interception, easy deployment, and remote administration.
Traffpro is a Linux-based traffic control, traffic accounting, bandwidth shaping, bandwidth management, and network security system with many features for reporting and billing. Internet access can be distributed to a LAN and users can be assigned a traffic quota. Networks are protected from external intrusions with a firewall. You can control ports, blacklist URLs, add iptables rules, configure multiple ISPs and multiple subnets, detect viruses, view URL histories (without Squid), see the traffic consumed by individual users, and more. It also has a ticket support system and a captive portal module.
Muse Proxy is a highly customizable multi-platform proxy server. It is easy to use and configure, acting successfully as a gateway to authenticated restricted content, rewriting Web server, Web Access Management, proxy server, and reverse proxy. It has been used for more than 10 years within the Muse Federated Search Platform to manage the authentication to resources and the navigation to full text, by restoring the server session on the end-user browser.