language VS freezed

Compare language vs freezed and see what are their differences.


Design of the Dart language (by dart-lang)


Code generation for immutable classes that has a simple syntax/API without compromising on the features. (by rrousselGit)
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language freezed
141 41
2,305 1,558
2.0% -
9.3 0.0
9 days ago 4 days ago
TeX Dart
GNU General Public License v3.0 or later MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of language. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-06-06.
  • HTML template languages?
    4 projects | /r/dartlang | 6 Jun 2023
    A future version of Dart will probably support macros which should make this all a bit easier to use, similar to how Swift 5.9 works which makes already fantastic use of its new macro capabilities by integrating mobx (or solidjs) like reactivity into SwiftUI by a harmlessly looking @Obervable annotation.
  • Build clean & concise UI components with Flutter similar to styled-components in React Native
    2 projects | /r/FlutterDev | 6 Jun 2023
    Yes, that needs a bit of boilerplate for the constructor declaration and the extra build method, but I personally don't mind and with implicit constructors this will become much easier. Also, you get a performant UI as Flutter knows to not redraw widgets that didn't change.
  • Why is Swift so slow (timeout) in compiling this code?
    5 projects | | 30 May 2023
    I implemented a prototype version of the algorithm in that paper when exploring exhaustiveness checking for pattern matching in Dart.

    I found it pretty easy to understand, but also really easy to get it to generate huge combinatorially large spaces. Some careful memoization and deduplication helped, but even so I never got the performance to a state I considered acceptable.

    Instead, I went with Luc Maranget's classic approach and figured out a way to adapt it to a language with subtyping (with a ton of work from Johnni Winther to figure out all of the hard complex cases around generics):

    The performance (in the prototype!) was dramatically better. You can always make pattern matching go combinatorial, but I haven't seen any real-world switches get particularly slow with our approach yet, and we have some fairly large tests of matching on tuples of enums.

  • Dart 3: 100% null-safe, records, pattern matching and class modifiers
    2 projects | /r/programming | 10 May 2023
    We are working on a proposal to add macros to the language for sophisticated compile-time metaprogramming. But the goal is more for larger-scale uses of metaprogramming—synthesizing entire new declarations—and not really about extending the syntax.
  • Confirmed. Dart 3 on May 10th
    5 projects | /r/FlutterDev | 4 May 2023
    Looked at, never gonna happen (says The language would have to have been designed for that from the beginning, and now there are too many constructs that would require too much "guessing" to get proper syntax right.
  • Compile-time Dependency Injection for Dart and Flutter
    2 projects | /r/FlutterDev | 3 May 2023
    However, I'm super stoked to see the community pushing forward. I think when/if metaprogramming becomes available (, similar magical experience would be possible in Dart everywhere. Consider following that issue and providing feedback. IIRC the champion of that feature ( would like to make DI frameworks one of the key use-cases for the language feature, and will appreciate your thoughts on what primitives you'd need.
  • Dart 4.0 vs a new language
    3 projects | /r/dartlang | 17 Apr 2023
    Dart is openly developed. If you want to know what Dart 4.0 will bring browse the Github (
    3 projects | /r/dartlang | 17 Apr 2023
    3 projects | /r/dartlang | 17 Apr 2023
    Not sharing memory between threads was a deliberate choice and I think it saves us from a lot of bugs. Especially race conditions in multi threaded code can be a pain to debug. But more you read a long discussion here:
  • AMA: My Flutter projects folder organization
    2 projects | /r/FlutterDev | 11 Apr 2023
    Specifically, see column 3 "being implemented" at which links to specifications of in-progress new Dart features.


Posts with mentions or reviews of freezed. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-05-17.

What are some alternatives?

When comparing language and freezed you can also consider the following projects:

json_serializable.dart - Generates utilities to aid in serializing to/from JSON.

bloc - A predictable state management library that helps implement the BLoC design pattern

flutter_gen - The Flutter code generator for your assets, fonts, colors, … — Get rid of all String-based APIs.

Flutter - Flutter makes it easy and fast to build beautiful apps for mobile and beyond

dart-petitparser - Dynamic parser combinators in Dart.


sdk - The Dart SDK, including the VM, dart2js, core libraries, and more.

quicktype - Generate types and converters from JSON, Schema, and GraphQL


gallery - Flutter Gallery is a resource to help developers evaluate and use Flutter

ClojureDart - Clojure dialect for Flutter and Dart