Yes, both Dropbox Business and Kintone offer a Free Trial.
Dropbox Business is designed for Large Enterprises, Medium Business and Small Business.
Kintone is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Dropbox Business Starts at $12.50/Month whereas for Kintone Starts at $24/User/Month.
Some top alternatives to Dropbox Business includes CollaborateCloud, Google Workspace, Odrive, Sync.com, Google Drive, FileCloud, Box, Microsoft OneDrive for Business, Dropbox Professional and BluSync.
Some top alternatives to Kintone includes monday.com, Quick Base, NoCodeZ, Airtable, Microsoft Power Apps, Appy Pie, Logiak, 2OS App Builder, DrapCode and Code2.