Yes, both Plann and Buffer offer a Free Trial.
Plann is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Buffer is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Plann Starts at $12/Month when Billed Yearly whereas for Buffer Starts at $5/Month when Billed Yearly.
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 Buffer includes Zoho Social, Crowdfire, SocialBee, Hootsuite, Planable, SocialMgr, Later, SocialBu, SocialOomph, Broadcast, InoSocial, CloudSocial, SocialHub and Postaside.