Sites and apps similar to VisualSitemaps include Octopus.do, which has a free version. Other options are Userflows, FlowMapp, DYNO Mapper and Slickplan. You can choose from more than 10 SEO Tools like VisualSitemaps for Windows and Mac.
XML sitemaps enable you to quickly and easily notify search engines about all the pages in your website and any changes. This ensures they are indexed quickly and correctly, especially with new websites which have lower natural discoverability.
phpSitemapNG is a free Google Sitemaps generator written in PHP, but also generates RSS-based, txt-based and HTML-based sitemap files. It will spider your website and also your filesystem (of course, as you prefer). You can download and use it for free, the licence is GPL.
