Mockable.io alternative: Mockfly vs Mockable
Mockable was a hosted REST and SOAP mock service with a free tier. Its domain does not resolve at the time of writing, and many teams are looking for a replacement. This page compares what Mockable offered with what you get in Mockfly, so the switch is quick.
What Mockable did well
Mockable had the right idea: a hosted URL you could point any client at, configurable status, headers and body, and no install. It supported REST and SOAP, offered a free tier, and its mocks stayed up as long as the service did. That is exactly the shape of tool a frontend or QA team wants when the backend is not ready.
Its weaknesses were the ones you would expect from a small service: the editor was basic, responses were static unless you wrote scripts, there was no realistic data generation, and collaboration meant sharing a login. And, as the current outage shows, the risk of a hosted tool is the day it stops answering.
What changes with Mockfly
- Projects, not loose mocks. Endpoints live in a project with its own base URL, environments, request logs and auto-generated documentation. Invite teammates and everyone edits the same mocks.
- Rules instead of scripts. One endpoint can return different responses depending on a query param, a header, a URL param, a body field or a JSONPath expression, with 16 comparators and AND/OR groups. No code to maintain.
- Realistic data on every request. Faker.js templates like
{{faker.person.fullName()}}re-evaluate on each call, and you can ask the AI to generate a whole JSON body from a sentence. - Import what you already have. OpenAPI and Swagger specs, Postman collections and HAR captures become endpoints in one step, so rebuilding a Mockable setup takes minutes, not an afternoon.
- Keep working if the network does not. The offline CLI pulls your project and serves it from localhost with the same rules and templates, so a hosted outage never blocks your CI or your demo.
Pricing
| Plan | Mockfly | Mockable |
|---|---|---|
| Free tier | 500 requests/day, 1 project, 4 endpoints, 2 responses each | Free tier with a public subdomain (service currently unreachable) |
| Individual | Pro: 15€/month, unlimited requests, projects and endpoints | Paid plans (no longer available) |
| Team | 49€/month with 5 seats, 9€ per extra seat, one invoice | Shared login |
Features comparison
| Feature | Mockfly | Mockable |
|---|---|---|
| Hosted, no install | ✅ | ✅ |
| REST and XML/SOAP responses | ✅ | ✅ |
| Conditional responses without scripting | ✅ | ❌ |
| Faker.js and AI-generated data | ✅ | ❌ |
| Import OpenAPI, Postman and HAR | ✅ | ❌ |
| Team seats and shared projects | ✅ | ❌ |
| Request logs and auto documentation | ✅ | Partial |
| Offline CLI, MCP server and public API | ✅ | ❌ |
| Proxy to the real API per endpoint | ✅ | ❌ |
How to migrate in 10 minutes
- Create a free account at app.mockfly.dev and a project. Its base URL is
https://api.mockfly.dev/mocks/<your-slug>. - If you have an OpenAPI spec or a Postman collection, import it. If not, open your app with the Chrome extension or export a HAR from DevTools and import that.
- Swap the base URL in your app or test configuration. Everything else stays the same.
Frequently asked questions
Is Mockable.io down?
At the time of writing (September 2026) mockable.io and www.mockable.io do not resolve, so the service is unreachable. If you depended on a Mockable mock for a demo or a test suite, you need a replacement now.
How do I move my Mockable mocks to Mockfly?
Recreate each mock as an endpoint (path, method, status, headers, body) or, if you still have the API described in OpenAPI or Postman, import it and every path becomes an endpoint. Mockfly also imports HAR captures from your browser, which is the fastest way to rebuild mocks from a running app.
Does Mockfly have a free plan like Mockable had?
Yes. The Starter plan is free with no credit card: 500 requests a day, 1 project, 4 endpoints and 2 responses per endpoint. Pro removes every limit for 15€ a month and Team adds 5 seats for 49€.
Can I mock SOAP or XML like on Mockable?
Yes. Set the content-type header to XML and write the body; rules can match on XML tags or XPath expressions and substitute values from the request. REST and JSON are the default, XML is a header away.