I don't think a free version is available to generate the sitemap code for such a huge site (50k+ pages). Have to look for some paid versions
You could try the newest version of A1 Sitemap Generator. It comes with free 30 days trial (fully functional, i.e. no cap on number of pages etc.)
XML Sitemaps http://www.xml-sitemaps.com/standalone-google-sitemap-generator.html Nice script-based generator. Didn't work for me on my particular large site and had to get a refund, but it's a nice script and works for most other people. I use Google Sitemap Generator. Server-side and requires a little tinkering. I believe it only works for "real" pages as well (aka sites with pages that actually reside in directories, not generated template/content type pages. I could be wrong though) Google Sitemap Generator https://www.google.com/webmasters/tools/docs/en/sitemap-generator.html VIGOS Gsitemap http://www.vigos.com/products/gsitemap/ A (new?) free Windows-based software program. I've played around with it and it seems ok. Might take a while to do 50,000 pages through. The others suggested here are pretty good. I've tried A1 and it's ok but seems to have a little bit of a learning curve. It's got so many features, functions, filters, etc organized by tabs.
i'm using XML Sitemaps , but it tooks age to generate sitemaps . eats bw too much , using memory aloooooooot any idea ?
Hi. If you need to create XML, HTML sitemap files for your sites or to notify search engines about updated sitemap files? Try Sitemap Writer Pro. It is a powerfull tool that helps you to create and keep up-to-date sitemaps for your websites. Free version is Sitemap Writer 2.0.