Yes, both airfocus and Trello offer a Free Trial.
airfocus 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 airfocus Starts at $19/Month when Billed Yearly whereas for Trello Starts at $5/User/Month when Billed Yearly.
Some top alternatives to airfocus includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Aha!, Jira, productboard, Wrike, Teamwork, Focussist, Quick Base, Airtable, Focusplan and MyFocusSpace.
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.