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Kotlin vs Dart: catalog facts
Kotlin	Dart
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Null safety and concise syntax Targets JVM, Android, web and native through multiplatform	Sound null safety and modern language features Language used by Flutter
Best tooling experience is tied to JetBrains IDEs Multiplatform setups add build complexity	Ecosystem is centred on Flutter, with less use elsewhere
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: BSD-3-Clause
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.