Today’s featured promo on MacUpdate features Web Devil 6.4 for US$19.95 (43% off, retail $34.95). “Web Devil is a tool for downloading Web sites for offline browsing, extracting Web site content, helping to maintain Web sites for content authors, and more. It also has filtering capabilities, so it only downloads what you want, and has a simple to use interface. Just enter a URL and it downloads the content with a single click. It contains several powerful tools for downloading and processing Web content with ease, including an URL and e-mail extractor, batch URL downloader, incremental downloader, and more. You can also view Web content directly within the app using the HTML and QuickTime.”