Yes, both Teamwork and Userback offer a Free Trial.
Teamwork is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Userback is designed for Individuals, Freelancers, Medium Business and Small Business.
The starting price of Userback begins at $14/Month when Billed Yearly, while pricing details for Teamwork are unavailable.
Some top alternatives to Teamwork includes Smartsheet, Miro, Process Street, Wrike, Notion, Freshbooks, TeamGantt, Zoho Projects, ProjectManager.com, Microsoft Project, ProWorkflow, nTask, Worksuite, Taskworld, Trackboard, Quick Base, Today, ClickUp, Resource Guru, Height and Project Insight.
Some top alternatives to Userback includes Backlogs, Backlog, ReportBugz, Buglog, Usersnap, Ybug, Bug-Track.com, Disbug, Feedback Monkey and Toybox.