InAppStory - Engage your customers with Stories right from your app or mobile web product with InAppStory.
Storyheap - Manage your SnapChat and Instagram stories.
Stories as a Service - Add stories to your website with 1 line of code
Unfold - Create beautiful and engaging stories with minimal and elegant templates. As well as a landingpage for all your links
Storyly - Bring superb stories to your app
Stori - The best way to analyse your Instagram Stories ๐ ๐ฆ