Yes, both Confluence and Trello offer a Free Trial.
Confluence 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 Confluence Starts at $8.33/User/Month when Billed Yearly whereas for Trello Starts at $5/User/Month when Billed Yearly.
Some top alternatives to Confluence includes Jira, Microsoft SharePoint, Google Workspace, GitBook, Zoho Wiki, Drupal Wiki, TWiki, Wiki Valley, XWiki and Team Wiki.
Some top alternatives to Trello includes ClickUp, Smartsheet, Miro, Process Street, Wrike, Notion, HubSpot CRM, Freshbooks, Jira, Basecamp, Zoho Projects, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, Worksuite, Trackboard, Quick Base, Todoist, Resource Guru and Height.