What it is
With Hamachi you can organize two or more computers with an Internet connection into their own virtual network for direct secure communication.

Hamachi is fast, secure and simple. It is also free.

What's in it for me
Think - LAN over the Internet.

Think - Zero-configuration VPN.

Think - Secure peer-to-peer.

Access computers remotely. Use Windows File Sharing. Play LAN games. Run private Web or FTP servers. Communicate directly. Stay connected.

Technology
Hamachi is a zero-configuration virtual private networking application with an open security architecture and NAT-to-NAT traversal capabilities.

Hamachi is the first application to mix seemingly unrelated networking technologies in one powerful package to deliver an unprecedented level of peer-to-peer connectivity. More ...

Security
Hamachi is secure. All Hamachi communications are encrypted and authenticated with industry-standard algorithms and protocols. Nobody will be able to see what two Hamachi peers are talking about. Not even us.

However what is equally important - Hamachi security architecture is completely open meaning that its detailed description is available for the review to anyone interested. More ...

Ease of Use
A special effort went into designing and polishing Hamachi user interface. The result is sleek, simple and intuitive, while still very much functional. Everything you need, nothing you don't.

Hamachi software contains no spyware, bannerware or any other -ware unrelated to its purpose. And it never will.

0.9.9.9 - features, fixes, Jul 30 (Tunnel resiliency)

* Added tunnel persistence (see here for details)
* Added rudimental bandwidth control
* Added tooltips for network items in the main window
* Added a 'browse..' option for double-click action
* Added -minimized command-line option
* Fixed the uninstaller and incremental update issues

0.9.9.8 - features, fixes, Jun 17 (Multilanguage)

* Converted entire package to use Unicode allowing Hamachi to 'speak' in language other than English. Translations to Dutch, Norwegian, Italian, Czech and Serbian are available. German, French, Slovak and Arabic are being prepared. Visit this forum for more information.

All translations are courtesy of Hamachi's users !

* Fixed IPX support that got affected by changes in 0.9.9.3
* Further compressed installation package reducing its size by 50KB