Mosaic vs jQuery UI: What are the differences?

**Introduction:**
In this Markdown document, we will outline the key differences between Mosaic and jQuery UI.

1. **Architecture**: Mosaic follows a modular architecture allowing developers to customize and extend its components more easily compared to jQuery UI which has a monolithic architecture.
2. **Themes and Styling**: Mosaic provides a more modern and customizable approach to theming and styling components, while jQuery UI has a more traditional theming system that may require more effort to achieve a modern look.
3. **Component Library**: Mosaic offers a smaller and more focused set of components that are lightweight and optimized for performance, whereas jQuery UI includes a larger variety of components which can be overwhelming for some projects.
4. **Accessibility**: Mosaic puts a stronger emphasis on accessibility features and best practices by default, making it easier for developers to create accessible web applications compared to jQuery UI.
5. **Browser Support**: Mosaic has a more streamlined approach to browser support, focusing on modern browsers and gracefully degrading for older ones, whereas jQuery UI aims to support a wider range of browsers which can sometimes lead to performance issues.
6. **Community and Support**: jQuery UI has a larger and more established community with a plethora of resources and plugins available, while Mosaic is a newer framework that is rapidly growing but may have limited external support.

In Summary, the key differences between Mosaic and jQuery UI lie in their architecture, theming, component library, accessibility features, browser support, and community resources.