Sketch - Professional digital design for Mac.
Chumpu iMessage Sticker Pack - Animated Chumpu cartoon stickers for iMessage
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
StickerSDK.Mojitok.com - In-app store of animated emojis, GIFs, and stickers with personal curations for 10x engagement and revenue - as seen on Samsung Galaxy.
Affinity Designer - Professional creative software, exclusively for Mac.
Sticker.Place API - Get stickers for your app