From Tennyson Maxwell Information Systems:
Teleport Exec provides a complete, programmatic interface to our webspider engine, allowing you to create and run complex spidering projects directly from your own applications. The program also exposes the entire project database, enabling you to get detailed information about websites directly from the spider. Based on our award-winning spidering technology, Teleport Exec is the most fully-featured, robust, and fastest webspider commercially available. If your project involves getting data from websites, small or large, save yourself much development time by starting with the best technology.