Mockoon
17
Reviews
4.5
Star rating
#5
Rank in API Mocking
Pros and cons
Pros
- Free Usage
- Open Source
- Ease of Use
- Deployment
Cons
- Learning Curve
- Poor Documentation
Traffic & LLM citations
Source: G2 review data
Key stats
—
65
Small Business
2
Adoption by company size
| Segment | Share of reviews |
|---|---|
| Small Business | 41.2% |
| Mid-Market | 23.5% |
| Enterprise | 35.3% |
Quarterly history
| Quarter | Reviews | Star rating |
|---|---|---|
| 2026 Q1 | 1 | 4.5 |
Satisfaction ratings
Ease of Use9.3
Ease of Setup9.3
Quality of Support9.0
Meets Requirements9.5
What reviewers say
Open-Source API Testing Made Effortless
4.5
“I like that Mockoon is open source and free, so I don't need to sign up for an account and re-login many times. The app is not overloaded and seems pretty responsive, so it doesn't slow down my work. It's fast and doesn't have the annoying logouts and lags that I experienced with”
An essential part of our toolkit
4.0
“No remote deployment, no account required, free and open-source.”
Easiest tool to mock REST APIs
5.0
“The tool is pretty straightforward; the best part is it's free and open-source.”