What tools do you use to crawl and generate sitemaps for existing sites?

over 6 years ago from , Senior Interactive Designer / Developer with Hoefler & Co.

It seems that if your goal is to get the largest number of spam results in Google searches you’ll enter either “_____ lyrics” or “sitemap generator”. Everything I find looks fake.

I'm looking for a tool that can periodically crawl my site and generate or update a sitemap.xml file. Even better if it lets me edit the results and settings (like page priority and update frequency).