Proxomitron, the Universal Web Filter, is a filtering web proxy written by Scott R. Lemmon. This program was originally esigned to run under Windows 95, and all further development of the program was ceased in 2003; even so, Proxomitron is still viable and used on modern Windows platforms such as XP and Vista. The program is generally used to block pop-ups and banners, to remove embedded sounds and animation from web pages, to alter or block javascripts, and to modify the appearance and content of web pages.