WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Iconosquare - Schedule now. We'll post on Instagram for you later!
FastAd Market - Advertise on any social media platform using just one Ad. Make money when you share other Ads on the timeline.
Later - Schedule and manage your Instagram posts
Messenger Day by Facebook - Share your day in Messenger
Storyheap - Manage your SnapChat and Instagram stories.