Don't waste your afternoon drawing UML sequence diagrams. Just enter the description, and this online tool will draw it for you. It can emulate the look of many other popular tools.
A list of major metacrawlers. Unlike search engines, metacrawlers don't crawl the web themselves to build listings. Instead, they allow searches to be sent to several search engines all at once.
M. Vidal, A. da Silva, E. de Moura, and J. Cavalcanti. Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, page 292--299. New York, NY, USA, ACM, (2006)