Startup Advisor's answer:
Founders who are looking to promote their products through the right influencers
DrumUp - Content Marketing & Social Media Management Software
Modash Influencer Search - Search every influencer. Analyze every audience. Instantly.
Facebook Pages Manager - Learn how to manage your Facebook Page and discover all the available tools that give you control over your business Pages.
SproutSocial - Sprout Social is a social media management tool created to help businesses find new customers & grow their social media presence. Try it for free.
Scheduler - Scheduler – Schedule Posts for Instagram, Facebook developed and published by Scheduler Inc.
Preview - Preview is an all-in-one, free mobile app for Instagram that offers lots of exciting services such as unlimited posts, rearranging post, edit, schedule, hashtags manager, analytic, and report.