FreeProxy is a proxy server. The program can work as HTTP and HTTPS, FTP, SOCKS 4/4a and SOCKS 5, NNTP and SMTP/POP proxies. TCP tunneling technologies are supported, as well as site address filtering, ISP dial-up and active connection breaking. The program can work as a system service. Basic and NTLM authentication is supported. Proxy server events are logged. The program is able to work with a large number of users and groups (up to 3000), is compatible with Hotmail and Outlook Express, can connect to other proxy servers and keep traffic statistics.