ProxyTunnel is a tool that lets you bypass SOCKS, proxy servers and firewalls; use FTP servers and file download managers. You can set the connection between your client applications (HTTP/ FTP/ Mail clients and ect.) and correspondent (HTTP/ FTP/ IMAP/ POP3/ SMTP and etc. ) server from behind the firewall (for instance, it makes possible to read and send e-mail messages via Yahoo! Mail servers).