diff --git a/README.md b/README.md
index e60fed2e..500a355e 100644
--- a/README.md
+++ b/README.md
@@ -1656,6 +1656,7 @@ Update Time, five active automations, webhooks.
   * [jsfiddle.net](https://jsfiddle.net/) — JS Fiddle is a playground and code-sharing site of front-end web, supporting collaboration.
   * [JSONPlaceholder](https://jsonplaceholder.typicode.com/) Some REST API endpoints that return some fake data in JSON format. The source code is also available if you would like to run the server locally.
   * [Lazarus](https://www.lazarus-ide.org/) — Lazarus is a Delphi-compatible cross-platform IDE for Rapid Application Development.
+  * [MarsCode](https://www.marscode.com/?utm_source=github&utm_medium=rm) - A free AI-powered cloud-based IDE.
   * [micro-jaymock](https://micro-jaymock.now.sh/) - Tiny API mocking microservice for generating fake JSON data.
   * [mockable.io](https://www.mockable.io/) — Mockable is a simple configurable service to mock out RESTful API or SOAP web services. This online service allows you to quickly define REST API or SOAP endpoints and have them return JSON or XML data.
   * [mockaroo](https://mockaroo.com/) — Mockaroo lets you generate realistic test data in CSV, JSON, SQL, and Excel formats. You can also create mocks for back-end API.