Iconosquare - Schedule now. We'll post on Instagram for you later!
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Later - Schedule and manage your Instagram posts
Service - Customer service issues solved for you, on demand, for free.
Storyheap - Manage your SnapChat and Instagram stories.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.