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MockServer

Repository: mock-server/mockserver-monorepoHomepage

Metrics as of , from the GitHub or GitLab API of each repository. Refreshed monthly.

What MockServer is

MockServer is a testing tool that acts as an HTTP(S) mock server and a proxy. It mocks HTTP/1.1, HTTP/2, gRPC, WebSockets, raw TCP and message brokers such as Kafka and MQTT. Requests are matched on method, path, query string, headers, cookies and body, including JSONPath, XPath, regex and OpenAPI matchers. As a proxy it records, inspects and modifies traffic, with breakpoints for stepping through exchanges. Chaos testing injects latency, dropped connections and errors into dependencies. Expectations come from a REST control plane, an OpenAPI specification, or clients for Java, JavaScript, Python and Ruby. It runs from Docker, Helm, a JAR or WAR, or the mockserver CLI. The README lists Java 17 or later for MockServer 6.x.

Written from the project's README, read .

Category
Test data and mocking
License
Apache-2.0
Language
Java
Changelog
Releases on GitHub

Repository metrics

Repository metrics
Stars4,9741
Forks1,1161
Open issues and PRs01
Contributors1411
Commits in the last 90 days1,2711
Last commit2026-09-221
Last releasemockserver-8.0.0, 2026-09-151
Fetched

1 Fetched from the GitHub or GitLab API on . Hover a value for its own date.

Status

activeLast commit within 90 days of the fetch date.

Computed from the last commit date and the archive flag on the fetch date. See the status rules.

Alternatives

Listed test data and mocking tools, same primary language first, then by GitHub stars. Each line gives one fact from the tool's documentation where it differs from MockServer's, with its source.

How to install

brew install mockserver
From README, read .

Questions

Is MockServer open source?

Yes. MockServer is released under Apache-2.0, an OSI-approved license, as reported by the GitHub API on 2026-09-22.

Is MockServer maintained?

On 2026-09-22, the last commit to the default branch was on 2026-09-22, so the listed status is active. Rule: Last commit within 90 days of the fetch date.

How many GitHub stars does MockServer have?

4,974 stars on 2026-09-22, from the GitHub API. The number is refreshed at each monthly update.

What language is MockServer written in?

The repository's primary language, as reported by the GitHub API, is Java.

How do I install MockServer?

The README gives this command: brew install mockserver

Sources

  1. GitHub REST API: repository, read
  2. GitHub REST API: commits, read
  3. GitHub REST API: latest release, read
  4. GitHub REST API: contributors, read
  5. README, read