Abstract: A search tool including a user interface provides functionality organized to support iterative search tasks for software or browser-based searches. These features may be combined with existing software and browser-based search engines to provide more extensive search features that are otherwise unsupported by existing search engine user interfaces. The user interface can be applied to varying search domains, from constrained search environments, such as a corporate database, or to the Internet. Additionally, the search tool may include a project tool to provide one or more searchers the capability to access, leverage, and/or collaborate on iterative searches.