Postman mock server alternative: Mockfly vs Postman
If your team already lives in Postman, its mock servers are the path of least resistance. They are also metered: mock calls count against a monthly allowance, and the free plan's allowance is small. This page compares the two on pricing, limits and the features a mock-first tool adds.
What Postman mock servers do well
Postman mock servers turn the saved examples of a collection into a hosted endpoint. Matching is by path and method, you can pick a specific example with the x-mock-response-code and x-mock-response-name headers, and dynamic variables such as {{$randomFirstName}} add some variety. Everything stays inside the workspace your team already shares, with the same permissions and the same collection you use for testing and documentation.
The trade-offs come from being one feature of a much larger product. Responses are static examples, there is no rules engine that looks at the request body or query string, editing means editing the collection, and every call to the mock is metered against the plan.
What changes with Mockfly
- Unlimited requests on paid plans. No monthly call counter on Pro or Team. The free plan is 500 requests a day, which alone is more than the free Postman allowance for a month.
- Conditional responses. Return a different response when a query param, header, URL param, body field or JSONPath matches, with 16 comparators and AND/OR groups. No special headers in the client.
- Data that changes. Faker.js templates re-evaluate on every request and the AI writes a whole body from a sentence, instead of the same saved example each time.
- Made for mocking. Dynamic routes, response delays, file responses, WebSocket mocks, proxy mode per endpoint, request logs and body history are all one click away, not buried in a client.
- Bring your collection. Import the Postman collection in one step and keep Postman as your client.
Where Postman is the better choice
- You need a handful of static examples and your usage stays well inside the plan's allowance.
- Your organisation already pays for Postman Team or Enterprise and wants one vendor.
- Mocks must inherit Postman's workspace roles and SSO.
Pricing
| Plan | Mockfly | Postman |
|---|---|---|
| Free | 500 requests/day, 1 project, 4 endpoints, 2 responses each | 1,000 mock server calls/month for the workspace |
| Individual | Pro: 15€/month or 150€/year, unlimited requests | Solo: $9/month billed annually, higher metered allowance |
| Team | 49€/month for 5 seats, 9€ per extra seat, unlimited requests | Team: $19 per user/month billed annually, higher metered allowance |
| Company | From 199€/month, setup done for you | Enterprise: $49 per user/month billed annually |
Third-party prices as listed on the vendor's website in September 2026. Check their pricing page for the current figures.
Features comparison
| Feature | Mockfly | Postman mock server |
|---|---|---|
| Hosted URL | ✅ | ✅ |
| Unlimited mock calls | ✅ Pro and Team | ❌ Metered per plan |
| Team collaboration | ✅ | ✅ |
| Rules on query, headers and body | ✅ | ❌ Example selection via headers |
| Random data | ✅ Faker.js and AI | ✅ Dynamic variables |
| Response delay | ✅ Per endpoint | ✅ Fixed delay option |
| Import Postman collections | ✅ | Native |
| Import OpenAPI and HAR, Chrome extension | ✅ | OpenAPI only |
| File responses and WebSocket mocking | ✅ | ❌ |
| Proxy to the real API per endpoint | ✅ | ❌ |
| Request logs and body history | ✅ | Call logs |
| Offline CLI, MCP server and public API | ✅ | API and CLI |
Bring your collection: create a free project at app.mockfly.dev and import it. Your requests keep working, without the counter.
Frequently asked questions
How many mock server calls does Postman give for free?
At the time of writing Postman's free plan includes 1,000 mock server calls a month, shared by the whole workspace. Paid plans raise the allowance. A frontend hitting a list endpoint on every page load can use that in a day, which is usually the moment teams look for an alternative.
Can I import my Postman collection into Mockfly?
Yes. Export the collection as v2.1, then paste it, upload the file or give Mockfly its URL. Every request, folder and saved example becomes an endpoint with its responses. It takes one step and keeps the folder structure.
Do I lose the rest of Postman?
No. Keep Postman as your API client and for tests; use Mockfly only as the mock server. Point your collection variables at the Mockfly project URL and your requests run against the mock.
Does Mockfly have request limits?
The free plan is 500 requests a day. Pro (15€/month) and Team (49€/month, 5 seats) have unlimited requests, so there is no monthly counter to watch and no surprise when the mock becomes popular.