manage your domains and list order by dates so that you will never forget to renewal the domain. Demo page is http://demo.dc9.cn/sdms/, the software has been applied asp.net 3.5(c#),linq to xml, jquery, ajax, xml database etc.
dotP2P would consist of servers running caches to keep track of domain and nameserver records. Cache servers can be created with any server that supports XML-RPC or SOAP. MySQL is used to store the the cache data.
DotDNS is a Dynamic DNS client and server software that can work with your own domains. It will work on standard W2K/W2003 servers. *UPDATE* MSSQL Express is designated as backend for storage.