MockWebServer

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One barScore 5.1

MockWebServer is ranked #24 of 27 in API mocking tools on Freedom251. There is a free plan.

MockWebServer plans and pricing

Open source Free Apache License 2.0 github.com · 4 Oct 2026

Purpose: MockWebServer is a scriptable web server for testing HTTP clients.
Test coverage: It lets developers specify responses and verify requests made by an app during HTTP and HTTPS calls.
Protocols: OkHttp describes MockWebServer as a library for testing HTTP, HTTPS, and HTTP/2 clients.
Request verification: Recorded requests can be checked by method, path, HTTP version, body, and headers.
Response scripting: Responses can be queued in order or generated by a Dispatcher that applies a policy to each request.
Simulated network conditions: Mock responses can be throttled to simulate a slow network for timeout and interactive testing.
Test languages: The README provides example tests in both Java and Kotlin.
Installation: The README lists the test dependency as com.squareup.okhttp3:mockwebserver3:5.5.0.
Integrations: The project documentation describes using MockWebServer to test apps that use the OkHttp client.
License: The MockWebServer README states that the library is licensed under Apache License, Version 2.0.
Scope limit: The OkHttp project says MockWebServer is intended for internal and basic client testing, is not a full-featured standalone HTTP testing library, and is not actively developed for new features.
Alternative: The project documentation suggests MockServer for users whose needs outgrow MockWebServer.
Price from: Free

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