Highlight: Automatic DNS settings, Immediate DNS return, Whitelisting, Custom TTL settings
Cost: Free
Developer: Arvid L. Armburst
How to install DNSAgent:
Disclosure: This software was reviewed on a PC running Windows 7 x64 with 4GB RAM and 4.0 GHz CPU. Please note, that installing this software may lead to serious system damage, therefore, we cannot be held responsible for any damage incurred.
Concerning DNSAgent, it looks, and (mostly) works, like an advanced packet tracing or sniffer.