One Click Test - Tool for quickly testing your design layout in one click.
AmaLinks Pro - All-in-one WordPress plugin for Amazon affiliates
XPRS - Free website builder - making web design like Lego™. No code
IncludeWP - Top open-source frameworks for WordPress plugin & theme devs
Dimensions Toolkit - Chrome Extension for designers to test responsive websites.
Plugin Table - Periodic table of all the most popular WordPress plugins