Mockzilla
Mockzilla: A flexible HTTP mock server for schema validation, failure testing, and pull-request environments. Ranked #11 of 26 in API Mocking Tools by our editors (8.0/10); pricing: Free plan; best for openAPI-driven teams needing PR environments.
At a glance
- Editor score8.0 / 10
- PricingFree plan
- Best forOpenAPI-driven teams needing PR environments
- Free planYes
- Paid from$10/mo
- Dynamic responsesYes
- Facts checked20 Sep 2026
Where it wins
- Generates schema-valid responses from OpenAPI specifications
- Injects latency and errors, with proxy fallback and response replay
- Runs locally through CLI, Docker, Docker Compose, or GitHub Actions
Where it doesn't
- Free plan is limited to 1K requests per month and 5 requests per second
- Paid hosted tiers cap monthly requests and request rates
- Supports HTTP rather than multiple API protocols
Our verdict on Mockzilla
Mockzilla turns OpenAPI specifications or plain JSON files into mock APIs for individual developers, small teams, and organizations. It supports hosted URLs for shared development, tests, and pull requests, while its MIT-licensed engine can run locally. The product is aimed at teams that want API simulations to follow an existing contract rather than manually maintaining every response.
Its strongest technical advantage is the combination of schema-aware generation and controlled failure scenarios. Mockzilla can create responses from types, formats, enums, and required fields, validate incoming requests against an OpenAPI specification, and match requests by path, query, and body. Teams can inject latency and errors, proxy requests to real APIs with mock fallback, inspect request history, and replay responses. Static JSON endpoints are also available when an OpenAPI specification is not part of the workflow.
Pricing is freemium. The Free plan costs $0 per month and includes a hosted mock server, OpenAPI spec upload, 1K requests per month, and 5 requests per second. Hobby costs $10 per month with 100K requests and 10 requests per second; Starter costs $20 with 200K requests and 20 requests per second; Pro costs $50 with 400K requests and 40 requests per second. Enterprise adds dedicated infrastructure, custom traffic sizing, and a custom domain. GitHub Actions, Docker, and Docker Compose support make it suitable for pull-request environments and local or CI execution. Choose Mockzilla when OpenAPI-driven mocking, failure injection, and portable execution matter; teams needing protocols beyond HTTP should look elsewhere.
Your product? Our editors can test Mockzilla in depth and publish a review, labelled as paid · from $149/mo →
Mockzilla pricing
All 5 Mockzilla plans and prices →
Mockzilla fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $10/mo |
| Dynamic responses | Yes |
| OpenAPI import | Yes |
| Request matching | Not verified |
| Mock data generation | Yes |
| Local deployment | Yes |
| Supported protocols | HTTP |
| Deployment | Cloud, Self-hosted |
| Platforms | Web, Windows, macOS, Linux |
| Support | Email, Tickets, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 3 integrations: GitHub Actions, Docker, Docker Compose |
| Pricing | Free plan (source) |
| Website | mockzilla.org |
| Facts checked | 20 Sep 2026 |
Mockzilla integrations
Mockzilla lists 3 integrations on its own site.
- GitHub Actions
- Docker
- Docker Compose
Alternatives to Mockzilla
- BeeceptorA broad API mocking platform with protocol coverage, contract testing, and hosted or self-hosted deployment.9.4
- MockServerA free, open-source choice for teams that need broad, self-hosted API control.9.1
- WireMockA flexible mocking platform spanning hosted, local, CI/CD, Kubernetes, and self-managed use.9.0
See all Mockzilla alternatives →
Used Mockzilla? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Mockzilla for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Mockzilla is listed in our API Mocking Tools directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/mockzilla/"><img src="https://www.itechguides.com/best/badge/mockzilla.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update