Instead of Beeceptor
Beeceptor alternatives
Beeceptor brings API mocks, service virtualization, contract testing, and failure simulation together for developers, testers, and QA teams. It supports HTTP, HTTPS, HTTP/2, mTLS, REST/OpenAPI, SOAP, GraphQL, and gRPC. No-code rules customize responses; proxying and traffic recording can keep work moving when a backend is unavailable. OpenAPI uploads can produce populated mocks, and its CLI exposes local services through public HTTPS URLs. Management APIs and MCP connectivity support programmatic and AI-assisted workflows.
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Microcks
Free plan APIExtensionLinux+4Open-source API and microservice contract testing — Microcks is an open-source tool with provider and consumer contract testing against live implementations and specification versions.
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Mockzilla
Free plan Open source APILinuxMac+3OpenAPI mocks with pull-request environments — Mockzilla adds per-pull-request mock URLs, request replay, and an offline, MIT-licensed CLI.
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MockServer
Free plan APILinuxMac+3Self-hosted HTTP, gRPC, and messaging mocks — MockServer covers SOCKS and experimental HTTP/3, AsyncAPI brokers, OAuth2/OIDC providers, and imported HAR or Postman traffic.
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Mockttp
Free plan LinuxMacSelf-hosted+2JavaScript HTTP integration tests and custom proxies — Mockttp is a JavaScript library for intercepting, transforming, and testing HTTP traffic, rather than a hosted API simulation platform.
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WireMock
Free plan APILinuxMac+3API simulation with enterprise governance — WireMock Cloud adds enterprise governance options including versioning, Git integration, audit logs to S3, RBAC, and SSO.
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Mockfly
Free plan APIExtensionLinux+2Hosted REST mocks with browser capture — Mockfly adds a Chrome extension for capturing browser requests and supports JSON, XML, PDF, and CSV responses.
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Knockout API
Free plan APIWebImage and video processing through an API — Knockout API focuses on image and video processing, not API mocking or service virtualization.
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Imposter
Free plan LinuxMacSelf-hosted+1 - 9
json-server
Free plan APISelf-hosted - 10
Mockoon
Free plan APILinuxMac+3 - 11
Mocki
Free plan APISelf-hostedWeb - 12
MockAPI
Free plan APIWeb - 13
WireMock
Free plan APILinuxSelf-hosted+1 - 14
moqapi.dev
Free plan APIWeb - 15
Stoplight Prism
Free plan APISelf-hostedWeb - 16
Mirage JS
Free plan Web - 17
Mock Service Worker
Free plan Self-hostedWeb - 18
MockWebServer
Free plan Android - 19
OpenAPI Mock
Free plan LinuxSelf-hostedWindows - 20
Hoverfly
Free trial APILinuxMac+3 - 21
OpenAPI Server
Free plan APISelf-hosted - 22
Pretender.js
Free plan Web - 23
Parasoft Virtualize
Free plan LinuxMacWeb+1 - 24
API-Mocked
Paid Self-hosted
The free plan has public endpoints, a 1 MB payload ceiling, three mock rules, and cleanup for unclaimed endpoints after 30 days. Paid plans start at $10 per month; Beeceptor also offers web, API, desktop, and self-hosted platforms. Consider whether you need a free open-source tool, offline or CI/CD workflows, broader protocol or import options, or a different kind of product altogether. Compare deployment, testing and automation needs, privacy controls, and pricing before moving existing API work.