Tabris VS Apache Flex

• Cross-Platform Development
  Tabris allows developers to use a single codebase to create applications for both iOS and Android, which can save time and resources.
• JavaScript and TypeScript Support
  Developers comfortable with JavaScript or TypeScript can leverage their existing skills to build mobile applications, making Tabris accessible to a wide range of developers.
• Native Widgets
  Tabris provides access to native UI components, which means applications have a native look and feel and can offer better performance than those relying on web views.
• Rapid Prototyping
  Tabris enables fast prototyping by allowing developers to iterate quickly with instant feedback loops through JavaScript live updating.
• Cordova Plugin Support
  Tabris can integrate with existing Cordova plugins, increasing the versatility of the apps by allowing access to additional device capabilities.

Possible disadvantages

• Learning Curve
  Developers new to Tabris and its specific architecture might face a learning curve, especially if they are not familiar with its nuances and specific APIs.
• Community and Ecosystem
  Compared to more popular frameworks like React Native or Flutter, Tabris has a smaller community and ecosystem, which can result in fewer resources and third-party libraries available.
• Enterprise Pricing
  While Tabris offers a free version, the more advanced features and support come at a cost, which might not be feasible for smaller developers or projects.
• Limited Web Integration
  Tabris focuses on mobile, and for developers looking for a truly unified web and mobile development platform, Tabris might not meet all their requirements.
• Performance Overheads
  Despite using native widgets, there could still be some performance overhead related to the JavaScript-to-native bridge, affecting real-time performance-critical applications.

• Rich User Interface
  Apache Flex allows developers to create highly interactive web applications with rich UI elements and animations, enhancing user experience.
• Cross-Platform Development
  Flex offers the ability to develop applications that run consistently across multiple platforms including browsers and desktops, saving time and effort in development.
• Mature Framework
  Having been around since the early 2000s, Flex is a mature and stable framework, which means it has a rich set of features and is well-documented.
• Component-Based Development
  Flex supports component-based development, allowing for modular and reusable code, which can streamline the development process and improve maintainability.
• Strong Community Support
  Apache Flex has a strong community of developers who contribute to its continuous improvement and provide support through forums, mailing lists, and documentation.
• Integrated Development Environment (IDE) Support
  Flex is compatible with several IDEs, including Adobe Flash Builder, which offers tools and features that enhance the development process.

Possible disadvantages

• Declining Popularity
  As newer technologies like HTML5, JavaScript frameworks (React, Angular, Vue), and CSS advances have gained traction, the popularity of Apache Flex has waned.
• Dependency on Flash
  Historically, Flex applications heavily relied on Adobe Flash Player, which is now obsolete and no longer supported by most modern browsers.
• Performance Issues
  Flex applications can sometimes suffer from performance issues, particularly with complex user interfaces or large datasets, making the user experience less smooth.
• Steep Learning Curve
  For developers new to Flex or ActionScript, the learning curve can be quite steep, requiring time to become proficient and productive.
• Limited Mobile Support
  Flex does not provide strong native support for mobile applications, which is a significant drawback in today's mobile-first development environment.
• Smaller Talent Pool
  Due to its declining usage, finding skilled Apache Flex developers can be challenging compared to more popular and current technologies.

Tracking Tabris since Mar 2021.

• Adobe Uses DMCA to Nuke Project That Keeps Flash Alive, Secure and Adware Free

  What's even stranger is that there is an open source project under Apache for Flex. One that even has not only the blessing of Adobe but the support of the company. Their answer has been write an app in Flex and get in compiled to JS. ... - Source: Hacker News / almost 5 years ago