Bench
Yes, both Flow and Microsoft OneDrive for Business offer a Free Trial.
Flow is designed for Large Enterprises, Medium Business and Small Business.
Microsoft OneDrive for Business is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Flow Starts at $6/User/Month when Billed Yearly whereas for Microsoft OneDrive for Business Starts at $1.99.
Some top alternatives to Flow includes Quickbase , Smartsheet, ClickUp, Wrike, TeamGantt, Teamwork, ProjectManager.com, Microsoft Project, ProWorkflow, Trackboard, TaskBranch, Quick Base, Height, Task Flow and Project Insight.
Some top alternatives to Microsoft OneDrive for Business includes CollaborateCloud, Microsoft SharePoint, Onehub, ShareFile, Dropbox Business, FileCloud, Box, Citrix Content Collaboration, imDocShare and Microsoft 365.