mockd

Single-binary mock server for HTTP, gRPC, GraphQL, WebSocket, MQTT, SSE, and SOAP, with chaos testing.

PlatformWebfree

mockd is an open-source, single-binary mock server that covers HTTP, gRPC, GraphQL, WebSocket, MQTT, SSE, and SOAP from one CLI tool, with built-in chaos testing and an MCP server for AI-driven mock creation. It works fully offline with no account required and offers a web dashboard for visual management. Built for developers and QA engineers who need one tool to mock every protocol their app uses.

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Behind the summary, Matchbox keeps a richer profile of mockd - 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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