LogMeIn Inc.

LogMeIn Hamachi is a VPN service that easily sets up in 10 minutes, and enables secure remote access to your business network, anywhere there's an Internet connection.
It works with your existing firewall, and requires no additional configuration. Hamachi is the first networking application to deliver an unprecedented level of direct peer-to-peer connectivity. It is simple, secure, and cost-effective.

LogMeIn Free includes: access from any Internet-connected Web browser; access to a Windows PC or Mac, remote control and desktop viewing, copy and paste between computers, Wake on LAN, reboot/reconnect (including safe mode), basic reports (remote access sessions and user access), Chat, AES 256-bit encryption, SSL/TLS intrusion detection, IP address lockout. No need for firewall, router or proxy configuration. No requirement for remote PC admin rights.

We do not have a download link yet, but you can find it using Google.

Hamachi2 Client