Bootstrap - Simple and flexible HTML, CSS, and JS for popular UI components and interactions
Sticker List - Discover the best stickers daily and publish your own.
Purecss - A set of small, responsive CSS modules that you can use in every web project.
Acrylic Charms by Sticker Mule - Add some charm to your life.
Materialize CSS - A modern responsive front-end framework based on Material Design
StickerPop API - Embed all the best stickers and GIFs into your apps.