Wippien is an open source (however, including proprietary non-free components) P2P zero-configuration VPN client. It is capable of establishing direct links between computers behind NAT firewalls without requiring any router configuration at all (in most cases); in other words, it emulates a local area network over an established Internet connection.
Wippen is quite similar to Hamachi but uses XMPP to manage user accounts, thus enabling features like a contact list, avatars etc. Rather than Hamachi's "network" approach, Wippien requires users to directly connect to one another[citation needed].
[edit] Alternatives
- Hamachi, a closed-source program, which offers approximately the same functions.
- Tunngle, a closed-source program, which is designed specifically for gaming.
- NeoRouter, a similar program, which is focusing on the network security features, such as built-in firewall, ACL and packet filtering.
- Remobo, with applications such as file transfer, LAN gameplay, secure file access, proxy browsing and support for running 3rd-party applications.
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