Yes, both Trello and Deskpro offer a Free Trial.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Deskpro is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Trello Starts at $5/User/Month when Billed Yearly whereas for Deskpro Starts at $29/User/Month when Billed Yearly.
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.
Some top alternatives to Deskpro includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Apptivo, Freshservice, Freshdesk, Deskero, HelpDesk, Jitbit Helpdesk, Desky, eStreamDesk, CRMdesk, ReadyDesk, AzureDesk, HESK and DeskXpand.