OnsenUI vs Ionic Framework
I want to start developing a mobile hybrid app using angularjs, css3 and html5. Was searching for a framework and found these two. Both are looking very nice however I was not able to get a good comparison between both of them. Can anyone please list down pros and cons for both.
A comparison between them in terms of scalable, out of the box components, speed and compatibility with Angular and devices targeted will be very helpful
Answer
One year has passed since both frameworks were released. Onsen UI is currently in stable 1.2 version while Ionic is in the last release candidate state.
I have worked with both of them so let me give you a short overview, I also wrote a much larger blog article, you'll find it at the end of this answer.
I won't go into much details about the core framework; if you have a previous AngularJS knowledge you will easily transition to Ionic or Onsen UI.
Both frameworks are built around AngularJS and they heavily depend on directives, you can also easily build your custom directives. Onsen UI also features a jQuery support (unnecessary if you ask me).
Both frameworks support Android 4+, iOS 6+ (some features are available on Android 2.3), Onsen UI also officially supports Firefox OS and desktop browsers. Ionic don't have an official desktop support, but it will still work (it will not be pretty, imagine ).
Ionic currently don't support Windows Mobile platform (it will have it in the future); Onsen UI support is currently in development (since November 2014).
Both frameworks support some kind of splitview feature so they can be used for table development.
Both frameworks have a distinctive beautiful looking flat UI. I prefer Ionic over Onsen UI look and feel, but this is a matter of personal taste. Both default themes look iOS 7 like.
Onsen UI supports native looking themes for Android and iOS. Ionic framework uses the same theme for all platforms, but some features will depend on the platform (for example tab look and feel)
Both frameworks have a working theme builder.
Ionic supports SASS while Onsen UI is built around Topcoat CSS library.
Both frameworks have a large widget support (directives)
Onsen UI has a better documentation. It is separated at two different locations. First one is “Components” where you can see different directives and each one has a working example you can use and replicate. Second part is a “Guide” where you are guided through the application creation process.
Ionic has a disorganized documentation (heavily fragmented). It lacks a real “getting started” tutorial, even if you have previous AngularJS experience. It shows you pieces, but not how to connect them correctly.
On the other hand Ionic has much larger community so you will easily find problem solutions.
Ionic framework has a great official forum + large StackOverflow community. At the same time, Onsen UI uses only StackOverflow as a help center (I would call this a fail).
Onsen UI has an HTML5 IDE called MONACA IDE (great tool), Ionic IDE is currently in production; you can participate in beta test.
Ionic has a growing 3rd party plugin community (for example date picker); I couldn't find any 3rd party Onsen UI plugin
I wrote a much larger article covering Ionic / Onsen UI changes, find it here.