Gitlab Swagger Utilities is a free Chrome add-on developed by itesic. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This program allows users to edit and preview swagger files directly within Gitlab.

With Gitlab Swagger Utilities, users can extend the functionality of Gitlab by enabling the preview of swagger contracts with just a single click. This add-on is designed to streamline the process of working with swagger files in Gitlab, making it easier for developers and teams to collaborate on API documentation.

Overall, Gitlab Swagger Utilities provides a convenient solution for developers who need to edit and preview swagger files within Gitlab. With its user-friendly interface and seamless integration, it enhances the workflow and efficiency of working with API documentation.