Yes, both Posted and Buzz offer a Free Trial.
Posted is designed for Individuals, Medium Business and Small Business.
Buzz is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Buzz begins at $49/Month, while pricing details for Posted are unavailable.
Some top alternatives to Posted includes Zoho Social, Crowdfire, SocialBee, Planable, SocialMgr, Later, Continuon, Socialdraft, Broadcast, CloudSocial, SocialHub, Send Social Media, Sociality.io, Social By Emovur and Blog To Social.
Some top alternatives to Buzz includes simplewiki, SlimWiki, Zoho Wiki, SmartSupport, Drupal Wiki, LearnLode Enterprise, TWiki, Wiki.js, Wiki Valley and GoGoWorx.