Yes, both CoSchedule and Trello offer a Free Trial.
CoSchedule is designed for Large Enterprises, Medium Business and Small Business.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for CoSchedule Starts at $29/User/Month when Billed Yearly whereas for Trello Starts at $5/User/Month when Billed Yearly.
Some top alternatives to CoSchedule includes Zoho Social, Crowdfire, SocialBee, Asana, Hootsuite, Sprout Social, Planable, SocialMgr, Later, Spredfast, Socialdraft, Broadcast, CloudSocial, SocialHub and HipSocial by 500apps.
Some top alternatives to Trello includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Freshbooks, Jira, Basecamp, Wrike, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, Worksuite, Trackboard, Quick Base, Todoist, Resource Guru and Height.