YEAY - QVC + Tumblr + Snapchat. Vertical video shopping.
mojo iOS - Create stunning video stories
StoriesAds.com - Make Instagram Stories Ads for your brand by Shakr & HubSpot
Morris - Video stories for podcasts
Animaker - Animaker is an online do-it-yourself (#DIY) animation video maker that brings studio quality presentations within everyone's reach. Animated Videos, Done Right!
Snippt - News in 4 second video stories plus short summaries