Side by side
Mockfly vs Mockzilla
Both stand on api mocking tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIExtensionLinux+2
Mockfly combines hosted and local mock API workflows with imports, conditional responses, and team tools. The free Starter plan has defined request and project limits, while paid plans start at €15/mo.
Visit Mockfly Free plan Open source APILinuxMac+3
Mockzilla offers both hosted mock APIs and an offline CLI, with request validation, fault simulation, and pull-request environments. Note the Free plan's API and history limits, and do not upload sensitive data.
Visit MockzillaThe facts
| Mockfly | Mockzilla | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | No | Yes |
| Runs on | API, Extension, Linux, Self-hosted, Web | API, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Pro annual: €150 a year | Hobby: $10 a month |
| Plans published | 5 | 5 |
| Maker | Not published | Not published |
| Website | mockfly.dev | mockzilla.org |
| On api mocking tools | #4 of 26 | #1 of 26 |
Mockfly: what it does well
- Supports conditional responses for each endpoint.
- Returns JSON, XML, PDF, and CSV files.
- Imports OpenAPI, Swagger, Postman, and HAR.
- Projects can be served locally offline.
- Teams can inspect request logs and response history.
What to know first
- Starter is limited to 500 requests per day.
- Starter includes one project and four endpoints.
- Starter allows two responses per endpoint.
Mockzilla: what it does well
- Imports OpenAPI specifications and plain JSON files
- Simulates latency and errors for testing retries
- Pull request action manages mock URLs by branch
- Offline MIT-licensed CLI can run in CI
- Supports request replay with status and timing
What to know first
- Free plan has no API access
- Free request history lasts 2 hours
- Uploaded content must not contain sensitive data
- Hobby costs $10 a month
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