ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Sticker List - Discover the best stickers daily and publish your own.
Thum.io - A real-time website screenshot generator
Sticker.Place API - Get stickers for your app
Blink - Blink is a team and employee app, with a Feed, Chat and Hub (for documents, links, files).
Unixstickers by Sticker Mule - Stickers for fans of unix, software, coding and open source