Holo - Mix holograms into videos & photos in Augmented Reality
HSHTG - Generate, manage, save and edit hashtags just in a few finger tap
Multiverse - Immersive social environments supporting creative artists
HashtagWiki.com - Hashtag Generator Tool
Membit - Pin photos to 3d space with augmented reality
Hashtagify.me - Free hashtags search engine, with paid advanced analytics