Flutter emerged a bit later (first teased in 2015, released around 2017) from Google’s labs. It came with its own engine, ...

With the Flutter 3 release, the platform now supports iOS, Android and web apps, as well as Windows, macOS and Linux desktop apps, all as part of Flutter’s stable release.

Google starts a push for cross-platform app development with Flutter SDK As Flutter hits beta 1, Google revs up promotion efforts for a new way to make apps.