Yes, both Trello and Gusto offer a Free Trial.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Gusto is designed for Freelancers, Medium Business and Small Business.
Pricing for Trello Starts at $5/User/Month when Billed Yearly whereas for Gusto Starts at $40/user/month when monthly.
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 Gusto includes Rippling, Paylocity Web Pay, BambooHR, ADP Workforce Now, Paychex Flex, Justworks, Zenefits, Paycom, OnPay, RUN Powered by ADP, QuickBooks Payroll, Deel, Remote.com, Papaya Global, Multiplier, ADP Payroll Services, Remofirst, Paycor, NETCHEX and Elite HRMS.