Flick - Grow your Instagram with quality hashtags
HSHTG - Generate, manage, save and edit hashtags just in a few finger tap
Tagsdock - Tag Instagram photos instantly from your iOS keyboard.
hashtags.org - Hashtag is an extensive hashtag research platform for analytics and tracking of hashtags, providing...
Jetpack App - The fastest way to copy your hashtags for Instagram
HashtagWiki.com - Hashtag Generator Tool