Spirit - The animation tool for the web.
Stripo - Stripo is an all-in-one email design platform. We enable our clients to build emails of any complexity, including interactive AMP emails, really fast and easy.
Lottie by Airbnb - Easily add high-quality animation to any native app
MJML - The open source framework for responsive emails
Haiku Animator - Create powerful animations for any app or website
BeeFree.io - Bee is MailUp's drag-&-drop editor for responsive design emails.