AmaLinks Pro - All-in-one WordPress plugin for Amazon affiliates
IntroBar - Welcome and entice visitors from specific sources with an IntroBar.
IncludeWP - Top open-source frameworks for WordPress plugin & theme devs
Subbscribe - Opt-in form to help you grow your web subscriptions
Plugin Table - Periodic table of all the most popular WordPress plugins
UseHoney - Embeddable forms for your website. Design and embed user feedback forms and subscriber forms into your own site in minutes.