BitNami RubyStack provides a fast, easy way to develop and deploy Ruby on Rails applications. It includes Ruby, Subversion, MySQL, SQLite, ImageMagick, and several Ruby Gems, and will optionally install Apache 2.2 with rewrite and proxy support. It supports Windows, Linux, and OS X, so you can share the same Rails environment on multiple platforms.
Google Sitemap Generator is a tool installed on your Web server to generate sitemaps automatically. Unlike many other third-party sitemap generation tools, Google Sitemap Generator takes a different approach: it will monitor your Web server traffic and detect updates to your Web site automatically.