Easy Opt-ins is described as 'The Easy Opt-ins WordPress plugin helps you increase conversions by making it really easy to add beautiful, highly converting email opt-in / lead-gen forms to your site' and is a Form Builder in the Business & Commerce category. There are four alternatives to Easy Opt-ins for a variety of platforms, including Online / Web-based, Self-Hosted solutions, Wordpress, Android and Android Tablet. Most alternatives are Form Builders and Email Marketing Services. The best alternative is Getsitecontrol. It's not free, so if you're looking for a free alternative, you could try Responster or Widgefy.io.
Widgefy is a platform that helps companies convert visitors into leads by providing interactive widgets in form of: quizzes, callbacks, testimonials etc. Currently we offer a sidebar widget, which main feature is an interactive calculator.