When comparing Quasar Framework vs Tabris Framework, the Slant community recommends Quasar Framework for most people. In the question“What are the best frameworks for developing cross-platform mobile apps with JavaScript?” Quasar Framework is ranked 3rd while Tabris Framework is ranked 14th. The most important reason people chose Quasar Framework is:
Vue 3.x available as a plugin.
Specs
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Pros

Pro Uses Vue.js 2.0
Vue 3.x available as a plugin.
Pro Good documentation and coding samples
Pro Massive suite of well test & optimized widgets
Instant rebuild for SPA, PWA, Cordova or Electron with Material/iOS Themes.
Pro Designed from the outset for desktop & mobile
Pro Can build/test your PWA with/without PWA wrapper
Pro Supports server side rendering (SSR) like Nuxt + SSR/PWA
"Icon genie" builds app icons and splash images for platforms selected.
Pro Ability to add custom server side code when using SSR
Pro Real device deployment
Connect your PC and mobile device through Wi-Fi using Tabris CLI - and just hit the Refresh button in your application to see the latest code version in action. No emulators or attempts to run a mobile application in the browser.
Pro Cordova plugins support
Most Cordova plugins work with Tabris as plug-n-play modules, without any special tuning.
Pro Beginner-friendly
Tabris is very easy to use. You can just download Tabris Dev App from Play Store/AppStore and run any example from GitHub or code snippet from documentation right away using Playground. Documentation is easy-to-follow, and to start developing in your local environment you should only download lightweight CLI tool that will pull application code from your PC to mobile device using Wi-Fi.
Pro Native widgets instead of web views
Tabris using native widgets - it makes your app run faster and look...native - regardless of platform. Stop trying to make your buttons look "like real iOS buttons" when you can just use the native ones.
Pro Completely free
Framework and all required tools are free. Playground and Dev App - free. Online build services -for free. For some time local build service was under a paywall, but now that feature is also free for everyone.
Cons
Con Developed by a single person
Statistically, apps being developed by a single person can be gone without warning.
