Yes, both Trello and Visitor Queue offer a Free Trial.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Visitor Queue is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Trello Starts at $5/User/Month when Billed Yearly whereas for Visitor Queue Starts at $23/Month when Billed Yearly.
Some top alternatives to Trello includes Smartsheet, Miro, Process Street, Wrike, Notion, Freshbooks, Jira, Basecamp, Zoho Projects, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, Worksuite, Trackboard, Quick Base, Todoist, ClickUp, Resource Guru and Height.
Some top alternatives to Visitor Queue includes Whoisvisiting, Leady, Leadfeeder, Lead Forensics, Leadinfo, eSales Hub, LeadMine, LeadSift, Dynamic Leads, Lead Revealer and Websitez.