The w2ui. com library is a set of jQuery plugins for front-end development of data-driven web apps. It contains the most widespread widgets such as Sidebar, Layout, Grid, Tabs, Utilitis, Popup, Forms, Toolbar, and Field Controls. The top component of this UI framework is Layout. The w2ui library is very lightweight, intuitive, and affordable. It possesses a lot of modern features and boasts a great UX design. The code of w2ui.com is licensed under the MIT License and the documentation — under CC BY 3.0.
The UI framework semantic-ui.com is aimed at speeding up web development. It helps create attractive and responsive layouts with the help of human-friendly HTML. It contains 50 + UI elements and about 3000 CSS variables. Menu is the top feature of semantic-ui.com. The library is powered by jQuery and LESS. Semantic is intuitive, lightweight, well-structured, and thoroughly documented. It provides simplified debugging and responsive web design. This UI library is available under the MIT license. Moreover, semantic-ui.com is open to community contribution.