Ranked in these QuestionsQuestion Ranking
Pro Open source and free
Onsen UI is open source, and completely free to use.
Pro Large selection of components
Pro Easy to use
Onsen UI provides very clear, well-written and detailed documentation.
It uses popular technologies that are likely already familiar to developers (such as jQuery and Angular).
The framework is semantic and intuitive to use, making it quite fast to learn.
Pro Can be used for web apps as well
Onsen UI is usable for classic web development as well as mobile.
Pro Supports React
React is the most trending front-end UI framework, naturally supporting that is a plus.