Code
Mobile app frameworks
5 technologies: what each one does, whether it is SaaS or open source, its price range and its website.
Flutter
5.5K sitesOpen source
Flutter is an open source framework by Google for building beautiful, natively compiled, multi-platform applications from a single codebase.
Used byiFood,Nubank,QuintoAndar
Capacitor
Open source
Wraps a web app into iPhone and Android apps with access to native features.
Devise
Open source
Login and accounts for Ruby on Rails apps.
Used byGitLab
- Guide
Expo
Open source
Framework and cloud builds for React Native apps on iPhone and Android.
React Native
Open source
Build iPhone and Android apps with React.
Data from the open Wappalyzer database (enthec/webappanalyzer, GPL-3.0), updated every week. Site counts from the HTTP Archive (September 2026). Code tools (frameworks, build, ORMs…) come from a list kept by Faundr.
More in Code
Languages 21Data pipelines and queues 18Backend frameworks 16Infrastructure and DevOps 12Databases and caches 10Full-stack frameworks 9Build tools and runtimes 8Styling and UI kits 8Data fetching and APIs 7ORMs and query builders 6UI libraries 6Testing 5Animation 4AI platforms 4Validation 3Desktop app frameworks 2