Get Advice Icon

Need advice about which tool to choose?Ask the StackShare community!

JUniversal
JUniversal

1
7
+ 1
0
Qt
Qt

80
56
+ 1
19
Add tool

JUniversal vs Qt: What are the differences?

JUniversal: A new, Java-based approach to cross-platform mobile apps (used by Google Inbox and Google Spreadsheets). The vision of JUniversal came from some guys at Nokia who possess considerable expertise both in Java and in building cross-platform apps. They built this tool to provide an elegant way to translate source code and make it useful across multiple platforms. JUniversal offers you the freedom to write your shared code in Java and then translate it to C# (available now) or to C++/Objective C++ (coming soon). You can also combine JUniversal with Google’s j2objc translator to translate Java to Objective-C for iOS; Qt: A leading cross-platform application and UI framework. Qt, a leading cross-platform application and UI framework. With Qt, you can develop applications once and deploy to leading desktop, embedded & mobile targets.

JUniversal and Qt can be primarily classified as "Cross-Platform Mobile Development" tools.

JUniversal is an open source tool with 132 GitHub stars and 22 GitHub forks. Here's a link to JUniversal's open source repository on GitHub.

- No public GitHub repository available -

What is JUniversal?

The vision of JUniversal came from some guys at Nokia who possess considerable expertise both in Java and in building cross-platform apps. They built this tool to provide an elegant way to translate source code and make it useful across multiple platforms. JUniversal offers you the freedom to write your shared code in Java and then translate it to C# (available now) or to C++/Objective C++ (coming soon). You can also combine JUniversal with Google’s j2objc translator to translate Java to Objective-C for iOS.

What is Qt?

Qt, a leading cross-platform application and UI framework. With Qt, you can develop applications once and deploy to leading desktop, embedded & mobile targets.
Get Advice Icon

Need advice about which tool to choose?Ask the StackShare community!

Why do developers choose JUniversal?
Why do developers choose Qt?
    Be the first to leave a pro

    Sign up to add, upvote and see more prosMake informed product decisions

      Be the first to leave a con
      What companies use JUniversal?
      What companies use Qt?

      Sign up to get full access to all the companiesMake informed product decisions

      What tools integrate with JUniversal?
      What tools integrate with Qt?
      What are some alternatives to JUniversal and Qt?
      React Native
      React Native enables you to build world-class application experiences on native platforms using a consistent developer experience based on JavaScript and React. The focus of React Native is on developer efficiency across all the platforms you care about - learn once, write anywhere. Facebook uses React Native in multiple production apps and will continue investing in React Native.
      Ionic
      Free and open source, Ionic offers a library of mobile and desktop-optimized HTML, CSS and JS components for building highly interactive apps. Use with Angular, React, Vue, or plain JavaScript.
      Xamarin
      Xamarin’s Mono-based products enable .NET developers to use their existing code, libraries and tools (including Visual Studio*), as well as skills in .NET and the C# programming language, to create mobile applications for the industry’s most widely-used mobile devices, including Android-based smartphones and tablets, iPhone, iPad and iPod Touch.
      Apache Cordova
      Apache Cordova is a set of device APIs that allow a mobile app developer to access native device function such as the camera or accelerometer from JavaScript. Combined with a UI framework such as jQuery Mobile or Dojo Mobile or Sencha Touch, this allows a smartphone app to be developed with just HTML, CSS, and JavaScript.
      Flutter
      Flutter is a mobile app SDK to help developers and designers build modern mobile apps for iOS and Android.
      See all alternatives
      Decisions about JUniversal and Qt
      No stack decisions found
      Interest over time
      Reviews of JUniversal and Qt
      No reviews found
      How developers use JUniversal and Qt
      Avatar of Google
      Google uses JUniversalJUniversal

      Comment from HackerNews (https://news.ycombinator.com/item?id=8998736)

      This is how Google Inbox and Google Spreadsheets works. See the slides from my recently produced GWT Create Session (http://t.co/ZvoaHxCoZT). J2ObjC slide deck here (https://docs.google.com/presentation/d/1mW_Plm5jAygELf7qjVK7...) Videos of the conference will be online soon.

      Prior to that, some 20% Googlers also produced the PlayN library (https://github.com/threerings/playn) This was taken over by Michael Bayne who added an iOS backend by Bytecode -> IKVM -> Mono conversion. I beleive j2objc and RoboVM backends exist now as well.

      The major benefit of the j2objc approach is the avoidance of GC in favor of ARC, the conversion of message-sends into C-method calls when possible, and integration with existing iOS toolchain.

      When we started, it seemed like an iffy idea, but after developing a product delivered to millions of users on a high volume site (gmail) that has 70% code sharing, and being able to simultaneously develop, test, and deploy across the platforms reasonably efficiently, a lot of skeptics have become converts to the concept.

      How much does JUniversal cost?
      How much does Qt cost?
      Pricing unavailable
      Pricing unavailable
      News about JUniversal
      More news
      News about Qt
      More news