ViPNet OFFICE is an IP VPN and designed as unique client-to-client or client-to-site VPN software with build-in secure business applications: encrypted Instant Messaging (IM), encrypted file exchange, build-in mail system - a stand-alone solution for a standard e-mail environment to keep your Inbox 100% free-of-spam, build-in personal firewall with IDS, tunnel securing Internet traffic between your offices, online visibility of vpn users, etc