Yes, both MURAL and Sendible offer a Free Trial.
MURAL is designed for Large Enterprises, Medium Business and Small Business.
Sendible is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for MURAL Starts at $9.99/User/Month whereas for Sendible Starts at $25/Month when Billed Yearly.
Some top alternatives to MURAL includes Collaboard, Microsoft Whiteboard, BeeCanvas, Miro, ClickUp, Conceptboard, Fresco, Remotings, Jamboard and Witeboard.
Some top alternatives to Sendible includes Zoho Social, Crowdfire, SocialBee, Loomly, Hootsuite, Sprout Social, Planable, SocialMgr, Later, SocialPilot, Spredfast, Socialdraft, CloudSocial, SocialHub and SendPilot.