What are some alternatives?
When comparing FlowMapp and DYNO Mapper, you can also consider the following products
Really Good UX - A library of screenshots for UX inspiration
XML-Sitemaps.com - Free Online Google Sitemap Generator.
VisualSitemaps - Autogenerate visual sitemaps in seconds.
A1 Sitemap Generator - A1 Sitemap Generator has been in active development and sold since 2005.
UX Recipe for iOS - Design checklist & estimation tool for your next UX project
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.