Dear XML sitemap
First, what a fantastic product. By far the best generation tool i have discovered on the internet.
My problem is that our company are running our website on a red hat server [as per recommendations of the developer] and internal skills are all MS. Due to a series of issues, we neither have the capability nor confidnece that the unlimited sitemap generator will cause problems.
The difficulty in for us to develop sitemaps is that we have a bespoke file extension - .ice [external links are visible to admins only] which many generation tools are sadly unable to spider further than the home page.
Your online tool is the first to spider properly, but unfortuantely as your limit is 500 pages - which is totally understandable - i don't really know how to proceed from here.