Yes, both SocialBu and Tweetmonk offer a Free Trial.
SocialBu is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Tweetmonk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for SocialBu Starts at $6.70/Month when Billed Yearly whereas for Tweetmonk Starts at $8/Month when Billed Yearly.
Some top alternatives to SocialBu includes Zoho Social, Crowdfire, SocialBee, Planable, SocialMgr, Later, SocialPilot, MavSocial, Broadcast, Ultimate SMM, Social Mako, CloudSocial, SocialHub, SocialGest and Send Social Media.
Some top alternatives to Tweetmonk includes Zoho Social, Crowdfire, SocialBee, Buffer, Hootsuite, Planable, SocialMgr, Later, SocialHub, Post Genie, BlogAssistant, Tweepsmap and Sposter.