Codeless Selenium typically refers to using graphical user interface (GUI) tools or platforms that allow users to create and automate test scripts for web applications without writing traditional code. These tools typically utilize Selenium WebDriver under the hood but provide a visual interface to interact with elements on the web page and define test steps.

Here are some popular codeless Selenium tools:

1. Katalon Studio: Katalon Studio is an all-in-one test automation solution that supports web, mobile, API, and desktop applications. It offers a codeless recording feature that allows users to create test cases by interacting with the application’s user interface directly.

2. TestProject: TestProject is a free test automation platform that allows you to create automated tests for web and mobile applications without coding. It offers a user-friendly interface with drag-and-drop capabilities to build test cases.

3. Tricentis Tosca: Tricentis Tosca is a comprehensive test automation suite that includes codeless testing capabilities. It allows users to create test cases using a graphical model-based approach.

4. Testim: Testim is an AI-powered test automation platform that offers a codeless testing option. It uses machine learning algorithms to understand and maintain test scenarios automatically.

5. Applitools Ultrafast Test Cloud: Applitools offers visual testing capabilities with codeless test creation for web and mobile applications. It allows users to visually define test steps and validations.

While codeless Selenium tools can be convenient and accessible for testers without programming experience, they may have some limitations when compared to traditional coding approaches. They might not offer the same level of flexibility, customization, and advanced scripting capabilities that coding with Selenium WebDriver provides.