Postedo - Simple Instagram scheduler that publishes for you
Instagram Feed Planner by Pallyy - Visually plan your Instagram feed, re-arrange media, add captions, share with clients & bulk auto-post to Instagram, Facebook, Twitter, LinkedIn & Google My Business.
Later - Schedule and manage your Instagram posts
Buffer for Instagram - Plan, track, and analyze your Instagram marketing
Grum - Post on Instagram from your computer!
YouTube to Instagram - Post videos from YouTube to Instagram