<p>Compare Networks Over Time is a free, web-based tool for comparing Issuecrawler networks, or data from a regularly scheduled crawl. The tool displays ranked actor lists for each comparison, in a format suitable for graphing via spreadsheet software. Tool input must be in XML format. Compare Networks Over Time is designed to be used particularly with output from the Govcom Foundation's <a href="https://www.issuecrawler.net/" target="_blank">Issuecrawler </a>tool.</p>