Neither KrakenD nor Postman offers a free trial.
KrakenD is designed for Freelancers, Medium Business and Small Business.
Postman is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Postman begins at $12/User/Month when Billed Yearly, while pricing details for KrakenD are unavailable.
Some top alternatives to KrakenD includes 3scale, Apigee Edge, Kong, WSO2 API Manager, Tyk API Management Platform, Gloo, Layer7 API Gateway, Apinizer, Meta API and Software AG webMethods.
Some top alternatives to Postman includes Apigee Edge, WSO2 API Manager, SwaggerHub, API Fortress, BlazeMeter, TestMace, Insomnia CLI, Meta API, RestCase and Dapi.