Dns Jumper - DNS Jumper is a portable freeware App which makes changing your DNS settings as easy as clicking a button , it is the world's first IPv6 supported Dns tool
DynDNS Simply Client - Small standalone dyndns client
GRCs DNS Benchmark - DNS Nameserver Performance Benchmark
No-IP - Dynamic DNS and Managed DNS Provider
namebench - Provides personalized DNS server recommendations based on your browsing history.
Dyn - Managed DNS, Outsourced DNS & Anycast DNS