Yes, both Backlog and Wrike offer a Free Trial.
Backlog is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Wrike is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Backlog Starts at $29.16/Month when Billed Yearly whereas for Wrike Starts at $0/user/month when monthly.
Some top alternatives to Backlog includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Wrike, TeamGantt, FogBugz, Teamwork, ProjectManager.com, Trackboard, TaskBranch, Quick Base, TestRail, Height and Project Insight.
Some top alternatives to Wrike includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Basecamp, Trello, TeamGantt, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project and ProWorkflow.