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Head-to-head · API Mocking Tools

Mockzilla vs Mockfly

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Mockzilla #11 in API Mocking Tools 8.0/10 Free plan Free plan✓ 4 of 4 features Visit Mockzilla
Mockfly #12 in API Mocking Tools 7.9/10 Free plan Free plan✓ 4 of 4 features Visit Mockfly

Mockzilla leads on 0 checks, Mockfly on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMockzilla · 8.0/10
  • Free planboth

Mockzilla scores higher on our rubric for api mocking tools: 8.0 against 7.9 out of 10; our editors rank them #11 and #12.

Mockzilla is the better fit for openAPI-driven teams needing PR environments. Mockfly is the better fit for small teams wanting hosted mocks plus local CLI.

  • Mockzilla fits best

    OpenAPI-driven teams needing PR environments

  • Mockfly fits best

    Small teams wanting hosted mocks plus local CLI

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.

Side by side

Feature Mockzilla 8.0/10 Visit ↗ Mockfly 7.9/10 Visit ↗
At a glance
Editor score 8.0 7.9
Ranking #11 in API Mocking Tools #12 in API Mocking Tools
Best for OpenAPI-driven teams needing PR environments Small teams wanting hosted mocks plus local CLI
Pricing model Free plan + paid Free plan + paid
Starting price $10/mo €15/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Browser extension
Platforms Web, Windows, macOS, Linux Web, Chrome extension
Support Email, Tickets, Docs Email, Docs
Integrations 3 integrations 7 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Mockzilla 4/4 · Mockfly 4/4
Dynamic responses ✓ ✓
OpenAPI import ✓ ✓
Mock data generation ✓ ✓
Local deployment ✓ ✓
Specs
Request matching Not checked yet Not checked yet
Supported protocols HTTP REST, WebSocket
Our review
Pros
  • 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
  • Conditional matching across paths, queries, headers, and request bodies
  • OpenAPI, Swagger, Postman, and HAR support with automatic documentation
  • Hosted HTTPS endpoints plus offline local CLI and WebSocket mocking
Cons
  • 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
  • Starter is limited to 500 requests per day, one project, and four endpoints
  • Advanced collaboration and administration begin on higher-priced plans
  • Custom domains with TLS are available only on the Pro plan
Our verdict

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…

Read the review →

Mockfly is a browser-based API mocking service for developers and frontend teams that need testable endpoints before production APIs are available. It supports hosted HTTPS mock endpoints, configurable methods and responses, status codes,…

Read the review →
  1. MockzillaAPI Mocking Tools 8.0Free plan
  2. MockflyAPI Mocking Tools 7.9Free plan

Strengths and trade-offs

  • Mockzilla — 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

  • Mockfly — where it wins

    • Conditional matching across paths, queries, headers, and request bodies
    • OpenAPI, Swagger, Postman, and HAR support with automatic documentation
    • Hosted HTTPS endpoints plus offline local CLI and WebSocket mocking

    Where it doesn't

    • Starter is limited to 500 requests per day, one project, and four endpoints
    • Advanced collaboration and administration begin on higher-priced plans
    • Custom domains with TLS are available only on the Pro plan
  • Mockzilla8.0/10 · Free plan

    A flexible HTTP mock server for schema validation, failure testing, and pull-request environments.

    Visit MockzillaFull verdict →
  • Mockfly7.9/10 · Free plan

    A flexible API mocking service combining hosted endpoints, local serving, and dynamic responses.

    Visit MockflyFull verdict →

All API mocking tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update