Yes, both Flow and Teamwork offer a Free Trial.
Flow is designed for Large Enterprises, Medium Business and Small Business.
Teamwork is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Flow begins at $6/User/Month when Billed Yearly, while pricing details for Teamwork are unavailable.
Some top alternatives to Flow includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Wrike, TeamGantt, Teamwork, ProjectManager.com, Microsoft Project, ProWorkflow, Trackboard, TaskBranch, Quick Base, Height, Task Flow and Project Insight.
Some top alternatives to Teamwork includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Freshbooks, Wrike, TeamGantt, ProjectManager.com, Microsoft Project, ProWorkflow, nTask, Worksuite, Taskworld, Trackboard, Quick Base, Today, Resource Guru, Height and Project Insight.