We have free and open-source scripts.
Traffic Directing System (TDS)
Alpha version of the system for the direction of traffic of visitors to your sites. Filter by country (GeoIP), browser type, user-agent, and other parameters.
Script to Find and Replace Text Across Multiple Files
Very handy script for mass replace text in files on the server. Search and replace files in a folder at any level of nesting, support for multiline replacement.