diff --git a/docs/api.md b/docs/api.md
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 - [dzone.com: 10 API Testing Tips for Beginners (SOAP and REST)](https://dzone.com/articles/10-api-testing-tips-for-beginners-soap-amp-rest) Let's take a look at ten API testing tips for beginners with a focus on REST APIs and SOAP APIs.
 - [blog.testproject.io: Top 10 API Testing Tools to Watch in 2020 🌟](https://blog.testproject.io/2020/06/25/top-10-api-testing-tools-to-watch-in-2020/)
 - [mockoon 🌟](https://mockoon.com/) Create mock APIs in seconds. Mockoon is the easiest and quickest way to run mock API locally. No remote deployment, no account required, open source.
+- [mockapy](https://pythonium.net/mockapy) Create mock APIs from a JSON object and customize their behavior using a Python rule engine. Open source.
 - [thenewstack.io: 4 Essential Tools for Protecting APIs and Web Applications](https://thenewstack.io/4-essential-tools-for-protecting-apis-and-web-applications/)
 - [youtube: API Testing Part 1- API Core Concepts](https://www.youtube.com/watch?v=b0D_bkcT4a4&t=1s&ab_channel=SoftwareDiagnosticsCenter)
 - [blog.testproject.io: API Testing 101 🌟](https://blog.testproject.io/2021/06/16/api-testing-101/)