Imposter

Scriptable mock server for REST, OpenAPI/Swagger, SOAP/WSDL, gRPC, Salesforce, and HBase APIs.

PlatformWebfree

Imposter is an open-source, scriptable mock server for REST, OpenAPI/Swagger, SOAP/WSDL, gRPC, Salesforce, and HBase APIs. It can run standalone in Docker, Kubernetes, or AWS Lambda, or embed directly in JVM and Node.js tests, with scripted dynamic responses and request validation against a spec. Built for developers and QA engineers who need to decouple their tests from real back-end systems.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of Imposter - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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