http://gsitecrawler.com/ 
Free
Features:
- Captures URL's from number of sources such as direct web crawl, importing existing site map file, server log file or text file.
- Ability to crawl URL's in javascript.
- The crawler obeys the command robots.txt to ignore or consider specific URL of website.
- Export and Import option in number of useful formats
- It can run on on scheduled basis locally or on a network resource.
- Automatic upload of sitemap to FTP location.
- Set frequency update parameter for priority pages.
- Wizard interface to get easily started with generating sitemaps.
- Editing facility for the generated site map structure.