Flex.io offers Free Trial, but CSVBox does not.
CSVBox is designed for Individuals, Medium Business and Small Business.
Flex.io is designed for Large Enterprises, Medium Business and Small Business.
Pricing for CSVBox Starts at $9/Month whereas for Flex.io Starts at $29/User/Month.
Some top alternatives to CSVBox includes Import.io, Flatfile, Data Monkey, Iteratively, Flatly, Flex.io, UseCSV, Quick API, Yobulk and Dataform.
Some top alternatives to Flex.io includes Import.io, Etlworks Integrator, Matillion ETL, Fivetran, Blendo, Flatly, K3, Etleap, Optimus Mine and ETLrobot.