VB utility which extracts a complete list of all user-agents from a set of IIS log files, capable of auto-detecting the field layout, scanning through all available logs and then constructing a list which includes the user-agent string, the first and last times the UA made a request, the highest and lowest TCP/IP addresses this UA has ever been seen on and the total number of requests made. Output format can include a simplified text output or the full detail XML output.
