SeattleCloud is a free Android application developed by SeattleClouds that allows users to design and develop mobile HTML pages using a WYSIWYG HTML editor. With SeattleCloud, users can build and design Android and iOS applications using HTML, CSS, and configurable native modules such as Notes and Calendar.

This application simplifies the design and development of mobile HTML pages, making it easy for users to create professional-looking applications. Additionally, SeattleCloud allows for free previewing of HTML-based apps built online on SeattleCloud.com, although this feature requires an account on the platform. Overall, SeattleCloud is a useful tool for anyone looking to create mobile applications using HTML.