ddnsd is a framework for secure dynamic dns. It features strong encryption and authentification, IPv4, IPv6 and DNS LOC support. Besides dns ddns can provide the updating of accesslists, so it can be used as groundwork for a dynamic vpn.
It is still in development but already usable and used.
License: copyright is myth
This project has the following developers:
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!