Yes, both Theneo and SwaggerHub offer a Free Trial.
Theneo is designed for Large Enterprises, Medium Business and Small Business.
SwaggerHub is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Theneo Starts at $20/User/Month whereas for SwaggerHub Starts at $90/Month when Billed Yearly.
Some top alternatives to Theneo includes Postman, RepreZen API Studio, SwaggerHub, Stoplight, APITree, Apitive Studio, Bump, Meta API, Dapi and Docstring.
Some top alternatives to SwaggerHub includes Apigee Edge, Postman, MuleSoft Anypoint Platform, WSO2 API Manager, RepreZen API Studio, Stoplight, APITree, Apitive Studio, Meta API and Dapi.