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Mockoon

Freemium#12 of 27 in Integration Testing ToolsAPI Mocking Tools API Design Tools API Development Tools +1 more

Mockoon: A capable free mock server for local development, with costly collaboration tiers. Ranked #12 of 27 in Integration Testing Tools by our editors (7.9/10); pricing: Free plan; best for collaborative API mocking and local development.

7.9/10Editor score

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At a glance

Editor score
7.9 / 10
Pricing
Free plan
Best for
Collaborative API mocking and local development
Free plan
Yes
Paid from
$100/mo
Founded
2017
Facts checked
20 Sep 2026

Where it wins
- Free open-source desktop app with local, offline operation
- Rules, state, fake databases, recording, proxying, and OpenAPI support
- CLI, Docker, GitHub Actions, cloud deployment, and collaboration
Where it doesn't
- Team costs $100 per month with annual billing
- Cloud collaboration and hosted deployment are paid capabilities
- Focuses on API mocking rather than broader integration verification

Our verdict on Mockoon

Mockoon is an open-source API mocking and sandboxing tool for developers and teams building or integrating REST APIs. Its desktop application runs on Windows, macOS, and Linux, and can operate locally without an account or internet connection. The free offering is suited to developers who need realistic endpoints, controlled responses, and test data during local development. It also supports self-hosted and API-based workflows, while optional Cloud services add browser access, synchronization, collaboration, and hosted deployments.

Its feature set is broad within API mocking. Rule-based request matching, dynamic templating, stateful responses, callbacks, webhooks, and CRUD operations on fake JSON databases support more involved application flows than static fixtures. OpenAPI and Swagger import and export can help align mocks with API definitions, while request recording and auto-mocking can accelerate setup. Proxy mode supports partial mocking when only selected routes need virtualization. For automated workflows, Mockoon offers a CLI, Docker image, GitHub Action execution, and a serverless library. AI-generated JSON templates and HTTP endpoints are also available.

The published Team plan costs $100 per month with annual billing and includes five team members, three cloud-deployed API mocks, 100,000 monthly calls, 200 AI-generated endpoints per month per user, Web UI access, and next-business-day support. Enterprise adds custom quotas and limits, optional dedicated instances, enterprise support, customer success, and custom payment options. That pricing makes the free local application the clearest fit for individual developers and teams that can manage their own environments. Choose Mockoon for collaborative API virtualization and local development; consider another tool if your priority is contract testing or direct database-interaction verification rather than mock-focused workflows.

Your product? Our editors can test Mockoon in depth and publish a review, labelled as paid · from $149/mo →

Mockoon pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 20 Sep 2026.

See plans on mockoon.com

All 2 Mockoon plans and prices →

Mockoon fact sheet

Free plan	Yes
Paid from	$100/mo
Database testing	Not verified
Contract testing	Not verified
Service virtualization	Yes
Parallel runs	Not verified
Deployment model	Both
Supported languages	Not verified
Test data management	Yes
Deployment	Cloud, Self-hosted, Desktop
Platforms	Web, Windows, macOS, Linux
Compliance & security	GDPR
Support	Email, Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Free plan (source)
Website	mockoon.com
Facts checked	20 Sep 2026

Alternatives to Mockoon

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Also Ranked In

Mockoon is ranked in 5 of our directories.

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Featured on iTechGuides

Mockoon is listed in our Integration Testing Tools directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update