Flex.io offers Free Trial, but K3 does not.
Flex.io is designed for Large Enterprises, Medium Business and Small Business.
K3 is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Flex.io begins at $29/User/Month, while pricing details for K3 are unavailable.
Some top alternatives to Flex.io includes Import.io, Etlworks Integrator, Matillion ETL, Fivetran, Blendo, Flatly, K3, Etleap, Optimus Mine and ETLrobot.
Some top alternatives to K3 includes K2View, Etlworks Integrator, Matillion ETL, Fivetran, ETL Framework, Kinetic Data, Datagaps ETL Validator, Etleap, ETLrobot and K8od.