One Click Test - Tool for quickly testing your design layout in one click.
FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
Dimensions Toolkit - Chrome Extension for designers to test responsive websites.
Octopus.do - Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.
AMP Templates - Beautiful, responsive AMP templates. Builder included.
DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.