Yes, both Trello and Smartsheet offer a Free Trial.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Smartsheet is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Trello Starts at $5/User/Month when Billed Yearly whereas for Smartsheet Starts at $7/User/Month when Billed Yearly.
Some top alternatives to Trello includes Basecamp, Wrike, Smartsheet, Zoho Projects, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, Worksuite, Trackboard and Height.
Some top alternatives to Smartsheet includes Microsoft PPM, Trello, TeamGantt, monday.com, Asana, Teamwork, ProjectManager.com and Microsoft Project.