Maqetta is a free and open-source project designed for the WYSIWYG visual creation of HTML5 user interfaces. Since the Maqetta application is developed using HTML, it operates directly within web browsers without the need for additional plugins or software installations. It is offered under a commercially-friendly open-source license, allowing users to download the source code, set it up on their own servers, modify it to suit their requirements, and contribute enhancements back to the project. Typically, the HTML pages generated by Maqetta are compatible with all major browsers, including Internet Explorer, although compatibility can vary based on the JavaScript toolkit utilized and specific coding practices. However, to effectively use the Maqetta application, it is essential to have a recent version of one of the supported browsers, which all provide the necessary HTML5 features that Maqetta depends on. Overall, the project is constructed using entirely open standards technologies, ensuring accessibility and flexibility for developers. This commitment to open standards also facilitates a collaborative environment where developers can innovate and share their modifications.