Yes, both Glaass and Flow offer a Free Trial.
Glaass is designed for Large Enterprises, Medium Business and Small Business.
Flow is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Flow begins at $6/User/Month when Billed Yearly, while pricing details for Glaass are unavailable.
Some top alternatives to Glaass includes Anywhere, SmartSuite, Qualified, Flow, Workvivo, Autodesk Construction Cloud, Flowall, Dashpivot, IFTTT, OnTrack and Consider.
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.