DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.
Muzli - UI/UX and Design Inspiration Chrome Extension
A1 Sitemap Generator - A1 Sitemap Generator has been in active development and sold since 2005.
Apple TV Tech Talks - Library of videos from Apple's dev team
GlooMaps - Create your visual sitemap on the go - easy peasy
The 1-Hour UI Audit - Free course on UI/UX design strategy for SaaS founders