# What is the difference between forms and popups and legacy forms?

[**Forms and popups**](https://app.getresponse.com/popups) are created using _responsive web design_ technology, while [legacy forms](https://app.getresponse.com/webforms/manage) have desktop and mobile versions depending on their size.

Forms and popups have advanced success page customization and rules to control the display of popups.

Forms and popups have a modern user interface consistent with our [**Website Builder**](https://app.getresponse.com/wbe/).

![Manage forms and popups.](https://us-wd.gr-cdn.com/help/sites/9/2022/05/1150/CleanShot-2022-05-17-at-13.49.29-2x-1024x550.png)

![Manage legacy forms.](https://us-wd.gr-cdn.com/help/sites/9/2022/05/1150/CleanShot-2022-05-17-at-13.48.54-2x-1024x637.png)