Yes, both Cirkus and GanttPRO offer a Free Trial.
Cirkus is designed for Individuals, Freelancers, Medium Business and Small Business.
GanttPRO is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Cirkus begins at $30/User/Month when Billed Yearly, while pricing details for GanttPRO are unavailable.
Some top alternatives to Cirkus includes Todoist, Wrike, Smartsheet, TeamGantt, Asana, Teamwork, ProjectManager.com, GanttPRO, nTask, Today, MeisterTask, Teamly, TaskOPad and ClickUp.
Some top alternatives to GanttPRO includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Freshbooks, Wrike, TeamGantt, ManagePro, monday.com, Teamwork, ProjectManager.com, ProProfs Project, Microsoft Project, ProWorkflow, Worksuite, Quick Base, GoodGantt, Resource Guru and Gantt.io.