Later - Schedule and manage your Instagram posts
VerifyShare - instagram, instagram tools, giveaway, parsing,
Grum - Post on Instagram from your computer!
Giv - Snapchat & Instagram giveaways made easy
Uplet - Uplet is an easy-to-use bulk Instagram uploader for Mac.
Retweet Pick - Retweet Pick is a random name generator for Twitter giveaways via generating a winning name from the list.