Yes, both Quickflow and Trello offer a Free Trial.
Quickflow is designed for Medium Business and Small Business.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Quickflow Starts at $7/Month whereas for Trello Starts at $5/User/Month when Billed Yearly.
Some top alternatives to Quickflow includes Microsoft Flow, Zoho Flow, Breakout, ZapUp by 500apps, Browserflow, automation.re, Qualified, Built.io Flow, Workvivo, Flowall, Cflow and Consider.
Some top alternatives to Trello includes monday.com, Quickbase , Smartsheet, ClickUp, Zoho Projects, Freshbooks, Jira, Basecamp, Wrike, Asana, Teamwork, ProjectManager.com, Microsoft Project, Worksuite, Trackboard, Quick Base, Todoist, Resource Guru and Height.