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Mockoon

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Create local mock APIs instantly, no internet needed

Developer ToolsAPI ToolsTesting & QA
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Reviews onG2Capterra
18 reviews tracked

The Bottom Line

Entry price

Free plan available, paid tiers above

Biggest pro

Local mock APIs

Biggest con

Local only

TL;DR - Mockoon

  • Mockoon is a free desktop application for creating mock APIs locally
  • It simulates REST APIs with customizable responses for development and testing
  • Completely free and open-source
Pricing: Free plan available
Best for: Growing teams
4.5/5 across review platforms

What is Mockoon?

Editorial review
Mockoon creates mock APIs locally. Desktop app for API mocking-simulate backends without internet or signup. The app runs locally. The setup is fast. The features cover mocking needs. Developers wanting local API mocks use Mockoon for desktop mock servers.

Available on: Windows, macOS, Linux, Web

how we evaluateSourcemockoon.com ↗

Pros & Cons

Pros

  • Local mock APIs
  • Easy to use
  • Open source
  • Good features
  • Cross-platform

Cons

  • Local only
  • Learning curve
  • Limited to mocking
  • UI could improve
  • Alternatives exist

Ratings Across the Web

4.5(18 reviews)

Mockoon holds an aggregate rating of 4.5 out of 5 from 18 reviews across G2 and Capterra, last checked March 18, 2026.

G216 reviews
4.5/5
Capterra2 reviews
4.5/5

Ratings aggregated from independent review platforms. Learn more

Key Features

API mockingLocal serverOpenAPI importResponse rulesLogsOpen source

Pricing Plans

Pricing checked Aug 20, 2026

Most Popular

Open Source

Free

Free

  • Mock APIs
  • Desktop app
  • CLI

Pro

$25/month

Cloud sync

  • Cloud sync
  • Team sharing
  • Enterprise support
Calculate your costView full pricing

Is Mockoon worth the price?

90/100

Mockoon's pricing is very generous, offering a fully functional open-source version for free.

The Pro tier at $25/month for cloud sync and team sharing is a fair price for collaborative teams. This pricing model is best for individual developers who need a robust mocking tool without cost, and small to medium teams requiring collaboration features.

Hidden Costs & Gotchas

No annual discount mentioned for Pro tier

Enterprise support details not specified

Scalability limits for Pro tier not clear

How Mockoon Compares to Competitors

Compared to Postman, which offers a free tier with limited collaboration and paid tiers starting around $15/user/month, Mockoon's free open-source offering is superior for individual use. For team collaboration, Mockoon Pro at $25/month is competitive, especially if it's a flat fee rather than per-user, unlike many Postman plans.

Reviews

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4.5/5

Across 18 verified user reviews on G2, Capterra

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Best Mockoon Alternatives

Top alternatives based on features, pricing, and user needs.

Postman logo
PostmanFreemium

API platform for building and using APIs

4.6
Stoplight logo
StoplightFreemium

Visually design, manage, and publish OpenAPI specs

4.4
SwaggerHub logo
SwaggerHubPaid

Design, test, and govern AI-ready APIs with enhanced collaboration and automation.

4.3
See all developer tools →

Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

Mockoon vs PostmanHead-to-head: features, pricing, who winsMockoon vs StoplightHead-to-head: features, pricing, who winsMockoon vs SwaggerHubHead-to-head: features, pricing, who wins

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Mockoon FAQ

How does Mockoon support API development workflows?

Mockoon allows developers to create local mock APIs instantly, which helps simulate backends without needing an internet connection or signup. This enables front-end and mobile developers to work independently from backend development schedules.

Which teams benefit most from using Mockoon?

Mockoon is ideal for development teams, particularly front-end and mobile developers, who need to test their applications against an API that may not yet be fully developed or is frequently changing. It provides a stable local environment for testing and development.

How does Mockoon compare to Postman for API mocking?

Mockoon focuses specifically on creating local mock APIs instantly, offering a desktop app for simulating backends without internet access. While Postman offers a broader range of API development tools, Mockoon specializes in local, offline API mocking.

What kind of limitations should users be aware of with Mockoon?

Mockoon is designed for local-only API mocking, meaning it does not support cloud-based or shared mock environments. Users should also anticipate a learning curve and be aware that the UI could be improved.

Does Mockoon include a free tier?

Yes, Mockoon is available on a free tier, allowing users to access its core features for creating local mock APIs. Paid plans are also offered for those requiring more extensive usage and additional features.

Can Mockoon be used across different operating systems?

Yes, Mockoon is a cross-platform application. This allows developers to use it on various operating systems to create local mock APIs and simulate backends.

Source: mockoon.com

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