OpenVPN is a full-featured SSL VPN solution which can accomodate a wide range of configurations, including remote access, site-to-site VPNs, WiFi security, and enterprise-scale remote access solutions with load balancing, failover, and fine-grained access-controls.
Hamachi gives you LAN over the Internet. Virtually any application that works over local/home networks can also be used over Hamachi networks. Think - Windows File Sharing, iTunes, Remote Desktop, Remote Assistance or even gaming - all fully encrypted, au