3scale offers Free Trial, but Amio does not.
Amio is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
3scale is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Amio Starts at $19/Month whereas for 3scale Starts at $750/Month.
Some top alternatives to Amio includes AdSystem, Bouncer, 3scale, Dell Boomi API Management, LinkApi, 360dialog, Bump, Apinizer, Meta API and Pandio.
Some top alternatives to 3scale includes Akana Platform, Apigee Edge, IBM API Connect, Kong, MuleSoft Anypoint Platform, WSO2 API Manager, API Fortress, Layer7 API Gateway, Meta API and APIToolkit.