Yes, both Plann and Social Insight offer a Free Trial.
Plann is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Social Insight is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Plann begins at $12/Month when Billed Yearly, while pricing details for Social Insight are unavailable.
Some top alternatives to Plann includes Zoho Social, Crowdfire, SocialBee, Social Insight, Buffer, Planable, Later, Sked Social, FollowPlanner, Post Planner, POSTOPLAN, SocialPlanner.io, SocialGest, Planly and Sharemyinsights.
Some top alternatives to Social Insight includes and undefined.