Flutter Cross Platform Projects
Flutter is a fairly new technology, while Dart is already about 13 years old. Dart was mature already 2013, so you could use it equaly powerful as Javascript. Flutter became interesting at a time when it supported actual real cross platform development, being a part of Android Studio / Intellij IDEA. This was not until end of 2018.
In 2024 we can use a rich IDE for development. Some projects build by flutter.engineering can be found here.