@ -232,6 +232,7 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
*VPN software.*
* [OpenVPN](https://community.openvpn.net) - Uses a custom security protocol that utilizes SSL/TLS for key exchange.
* [SoftEther VPN](https://www.softether.org/) - Alternative to OpenVPN.
* [strongSwan](http://www.strongswan.org/) - Complete IPsec implementation for Linux.
## Webmails