What are some alternatives?
When comparing XML-Sitemaps.com and Tiny Tiny RSS, you can also consider the following products
DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.
Feedly - The content you need to accelerate your research, marketing, and sales.
GlooMaps - Create your visual sitemap on the go - easy peasy
Inoreader - Dive into your favorite content. The content reader for power users who want to save time.
WonderWebWare Sitemap Generator - Sitemap Generator is freeware program that will help you to automatically generate site maps for google, bing and yahoo in their respective file formats.
NewsBlur - NewsBlur is a personal news reader that brings people together to talk about the world.