If you've used Analog, the webserver log analyzes tool (no relation to yours truly), then you know it rocks. One of the best features of Analog is it's speed, but it's not as fast as it could be - Enter AnalogX QuickDNS.
The only slow spot in Analog is it's DNS lookup, which QuickDNS handles. Simply execute it before you run Analog, and it will do all of the DNS work for it, and it even uses the same config file. At it's default setting it's about 100x faster than Analog (ie, it runs 100 simultaneous queries), so you'll notice a performance increase right off the bat.
QuickDNS will also handle all of the DNS work that Analog normally does as well (rechecking valid and invalid links after a certain amount of time). Simple to use, small, and free, so download it now and start loggin'. Download Free QuickDNS. QuickDNS File Size 248 KB . QuickDNS Website
QuickDNS Related Software:
DNS Helper - Quick DNS Switcher
Free Net Speed Monitor Software
Netstat Live TCP/IP Monitor
Google DNS Helper
Free Http Explorer