Flutter Gems
Flutter Gems is a curated list of 6700+ useful Dart & Flutter packages that are categorized based on functionality.
Top Flutter Dart Extension and Enhancement packages
Last updated: January 26, 2025
In case you want to supercharge Dart Language by adding new data structures, useful extensions and other features, look no further. The following list of Dart packages can enhance your Dart development experience.
collection
👍 1.31K ⬇️ 4.9M
Dart 3 compatibleMaintenance Status: Good
Collections and utilities functions and classes related to collections.
equatable
👍 3.3K ⬇️ 2.9M
Dart 3 compatibleMaintenance Status: Good
A Dart package that helps to implement value based equality without needing to explicitly override == and hashCode.
typed_data
👍 46 ⬇️ 5.2M
Dart 3 compatibleMaintenance Status: Good
Utility functions and classes related to the dart:typed_data library.
built_value
👍 727 ⬇️ 4.6M
Dart 3 compatibleMaintenance Status: Good
Value types with builders, Dart classes as enums, and serialization. This library is the runtime dependency.
async
👍 575 ⬇️ 4.4M
Dart 3 compatibleMaintenance Status: Good
Utility functions and classes related to the 'dart:async' library.
fixnum
👍 58 ⬇️ 4.7M
Dart 3 compatibleMaintenance Status: Good
Library for 32- and 64-bit signed fixed-width integers with consistent behavior between native and JS runtimes.
stream_transform
👍 268 ⬇️ 3.7M
Dart 3 compatibleMaintenance Status: Good
A collection of utilities to transform and manipulate streams.
quiver
👍 610 ⬇️ 2.7M
Dart 3 compatibleMaintenance Status: Good
Quiver is a set of utility libraries for Dart that makes using many Dart libraries easier and more convenient, or adds additional functionality.
code_builder
👍 232 ⬇️ 2.8M
Dart 3 compatibleMaintenance Status: Good
A fluent, builder-based library for generating valid Dart code.
built_collection
👍 319 ⬇️ 2.6M
Dart 3 compatibleMaintenance Status: Poor
Immutable collections based on the SDK collections. Each SDK collection class is split into a new immutable collection class and a corresponding mutable builder class.
pool
👍 100 ⬇️ 2.8M
Dart 3 compatibleMaintenance Status: Poor
Manage a finite pool of resources. Useful for controlling concurrent file system or network requests.
timing
👍 26 ⬇️ 2.6M
Dart 3 compatibleMaintenance Status: Good
A simple package for tracking the performance of synchronous and asynchronous actions.
dartz
👍 1.43K ⬇️ 435.3K
Dart 3 compatibleMaintenance Status: Poor
Functional Programming in Dart. Purify your Dart code using efficient immutable data structures, monads, lenses and other FP tools.
tuple
👍 468 ⬇️ 1.1M
Dart 3 compatibleMaintenance Status: Average
A library providing a tuple data structure.
basic_utils
👍 355 ⬇️ 895.8K
Dart 3 compatibleMaintenance Status: Average
Common util classes for Strings, Dates, X509, PKCS, Cryptographie and more.
dartx
👍 928 ⬇️ 351.7K
Dart 3 compatibleMaintenance Status: Average
Superpowers for Dart. Collection of useful static extension methods.
fpdart
👍 946 ⬇️ 202.6K
Dart 3 compatibleMaintenance Status: Good
Functional programming in Dart and Flutter. All the main functional programming types and patterns fully documented, tested, and with examples.
chunked_stream
👍 45 ⬇️ 824.1K
Dart 3 compatibleMaintenance Status: Average
Utilities for working with chunked streams, such as byte streams which is often given as a stream of byte chunks with type Stream<List<int>>
circular_buffer
👍 4 ⬇️ 832.2K
Dart 3 compatibleMaintenance Status: Good
A Dart Circular Buffer container based on List with a fixed capacity.
synchronized
👍 541 ⬇️ 345K
Dart 3 compatibleMaintenance Status: Good
Lock mechanism to prevent concurrent access to asynchronous code.
supercharged
👍 910 ⬇️ 22.8K
Dart 3 compatibleMaintenance Status: Poor
Supercharged brings all the comfort features from languages like Kotlin to all Flutter developers.
easy_debounce
👍 413 ⬇️ 238.5K
Dart 3 compatibleMaintenance Status: Poor
An extremely easy-to-use method call debouncer package for Dart/Flutter.
flutter_isolate
👍 455 ⬇️ 13.6K
Dart 3 compatibleMaintenance Status: Good
FlutterIsolate provides a way to launch dart isolate in flutter that work with flutter plugins.
fast_immutable_collections
👍 360 ⬇️ 47.4K
Dart 3 compatibleMaintenance Status: Good
Immutable lists, sets, maps, and multimaps, which are as fast as their native mutable counterparts. Extension methods and comparators for native Dart collections.
worker_manager
👍 362 ⬇️ 14.9K
Dart 3 compatibleMaintenance Status: Good
The worker_manager allows you to manage CPU-intensive calculations across isolates
extension
👍 43 ⬇️ 271.3K
Dart 3 compatibleMaintenance Status: Poor
Package including lot helpers for easy developing on dart language
debounce_throttle
👍 62 ⬇️ 210.6K
Dart 3 compatibleMaintenance Status: Poor
A debouncer and throttle that works with Futures, Streams, and callbacks.
result_dart
👍 126 ⬇️ 138.7K
Dart 3 compatibleMaintenance Status: Good
Result for dart. It is an implementation based on Kotlin Result and Swift Result.
mutex
👍 107 ⬇️ 135.6K
Dart 3 compatibleMaintenance Status: Average
Mutual exclusion with implementation of normal and read-write mutex
simple_observable
👍 5 ⬇️ 211K
Dart 3 compatibleMaintenance Status: Poor
Observe value changes using a Future, Stream, and/or a callback.
dart_eval
👍 236 ⬇️ 1.5K
Dart 3 compatibleMaintenance Status: Good
A flexible Dart bytecode compiler and interpreter written in Dart, enabling dynamic execution and code push for AOT Dart apps.
type_plus
👍 22 ⬇️ 169.4K
Dart 3 compatibleMaintenance Status: Good
Give your types superpowers and spice up your generics. Make types great again.
kartal
👍 213 ⬇️ 1.4K
Dart 3 compatibleMaintenance Status: Good
Kartal is an extension package for easy to use at app development time. You can access more features with primitive variables(context, string etc.).
copy_with_extension
👍 101 ⬇️ 90.7K
Dart 3 compatibleMaintenance Status: Good
Annotation for generating 'copyWith' extensions code using 'copy_with_extension_gen'.
either_dart
👍 152 ⬇️ 45.1K
Dart 3 compatibleMaintenance Status: Average
Error handler library for type-safe and easy work with errors on Dart and Flutter. Either is an alternative to Nullable value and Exceptions.
squadron
👍 169 ⬇️ 20.9K
Dart 3 compatibleMaintenance Status: Good
Multithreading and worker thread pool for Dart / Flutter, to offload CPU-bound and heavy I/O tasks to Isolate or Web Worker threads.
reflectable
👍 172 ⬇️ 18.2K
Dart 3 compatibleMaintenance Status: Good
Reflection support based on code generation, using 'capabilities' to specify which operations to support, on which objects.
multiple_result
👍 146 ⬇️ 32.2K
Dart 3 compatibleMaintenance Status: Average
Multiple results for dart. Inspired by dartz's Either and Kotlin's sealed classes
kt_dart
👍 168 ⬇️ 7.8K
Dart 3 compatibleMaintenance Status: Average
This project is a port of kotlin-stdlib for Dart/Flutter projects. It includes collections (KtList, KtMap, KtSet) with 150+ methods as well as other useful packages.
common_utils
👍 162 ⬇️ 9.7K
Dart 3 compatibleMaintenance Status: Poor
Dart common utils library.Contain DateUtil, EncryptUtil, JsonUtil, LogUtil, MoneyUtil, NumUtil, ObjectUtil, RegexUtil, TextUtil, TimelineUtil, TimerUtil.
maybe_just_nothing
👍 9 ⬇️ 136.1K
Dart 3 compatibleMaintenance Status: Average
Yet another variation of the good old Maybe monad with eager execution written in Dart.
darq
👍 148 ⬇️ 18.8K
Dart 3 compatibleMaintenance Status: Average
The power of lazy-evaluated enumerables in your hands! (A port of functional LINQ from the .NET library.)
global_configuration
👍 137 ⬇️ 17.7K
Dart 3 compatibleMaintenance Status: Average
A flutter package for managing different configurations and making them available everythere inside the app.
more
👍 68 ⬇️ 71.7K
Dart 3 compatibleMaintenance Status: Good
More Dart — Literally. Collecting, iterating, caching, mathematics, matching, ordering, and formatting easily.
queue
👍 104 ⬇️ 26.4K
Dart 3 compatibleMaintenance Status: Good
Queue up futures from multiple sources and await their return anywhere in your code.
basics
👍 103 ⬇️ 19.7K
Dart 3 compatibleMaintenance Status: Average
A Dart library containing convenient extension methods on basic Dart objects.
r_tree
👍 10 ⬇️ 88.7K
Dart 3 compatibleMaintenance Status: Good
R-tree implementation to index and query two-dimensional data
intersperse
👍 48 ⬇️ 56.6K
Dart 3 compatibleMaintenance Status: Poor
Insert an element between each element of an Iterable or List.
async_task
👍 104 ⬇️ 7.2K
Dart 3 compatibleMaintenance Status: Average
Asynchronous tasks and parallel executors (similar to thread pools) for all Dart platforms (transparently), without having to deal with 'Isolate' complexity.
isolate_handler
👍 101 ⬇️ 939
Dart 3 compatibleMaintenance Status: Poor
Effortless isolates abstraction layer with support for inter-isolate communication.
buffer
👍 19 ⬇️ 65.6K
Dart 3 compatibleMaintenance Status: Good
Utility functions and classes to work with byte buffers and streams efficiently, to read and write binary data formats.
flustars
👍 93 ⬇️ 954
Dart 3 compatibleMaintenance Status: Poor
Flutter common utils library. SpUtil, ScreenUtil, WidgetUtil, DirectoryUtil, ImageUtil. SharedPreferences Util. Screen info & Screen adaptation. get image size.
screwdriver
👍 92 ⬇️ 906
Dart 3 compatibleMaintenance Status: Good
A dart package aiming to provide useful extensions and helper functions to ease and speed up development.
dart_extensions
👍 89 ⬇️ 2.9K
Dart 3 compatibleMaintenance Status: Good
Set of method-extensions for dart that makes using framework in a much easier and clean way also adds additional functionality.
eventify
👍 42 ⬇️ 41.3K
Dart 3 compatibleMaintenance Status: Poor
A cancellable event emitter which supports context based event driven programming.
isolate_manager
👍 88 ⬇️ 2.7K
Dart 3 compatibleMaintenance Status: Good
Create multiple long-lived isolates for the Functions, supports Worker on the Web (with the effective generator) and WASM compilation.
isolated_worker
👍 87 ⬇️ 1.8K
Dart 3 compatibleMaintenance Status: Poor
A singleton isolated worker for Flutter (Isolate) and Web (Web Worker).
cancellation_token
👍 22 ⬇️ 55.7K
Dart 3 compatibleMaintenance Status: Average
Easy async task cancellation for tasks using cancellation tokens in Dart.
fleasy
👍 82 ⬇️ 96
Dart 3 compatibleMaintenance Status: Good
Useful and easy to use extensions, helper classes and widgets to create Flutter apps easier.
dispose_scope
👍 12 ⬇️ 57.2K
Dart 3 compatibleMaintenance Status: Average
Simple package making it easy to dispose (aka cancel, aka close) your objects.
number_display
👍 76 ⬇️ 2K
Dart 3 compatibleMaintenance Status: Poor
To display data in a width-limited component, this function will smartly help you to convert number to a certain chart length. To be simple, plain, flexible and accurate.
directed_graph
👍 59 ⬇️ 10.8K
Dart 3 compatibleMaintenance Status: Good
Generic directed graph and weighted directed graph with algorithms enabling sorting and topological ordering of vertices.
isolate_agents
👍 71 ⬇️ 143
Dart 3 compatibleMaintenance Status: Poor
Agents are state that lives on a background isolate.
easy_isolate
👍 51 ⬇️ 16.8K
Dart 3 compatibleMaintenance Status: Poor
An abstraction of the isolate providing an easy way to work with different threads
crdt
👍 69 ⬇️ 587
Dart 3 compatibleMaintenance Status: Good
Dart implementation of Conflict-free Replicated Data Types (CRDTs).
rx
👍 11 ⬇️ 48.4K
Dart 3 compatibleMaintenance Status: Average
Reactive Extensions Library for Dart providing an API for asynchronous programming with observable streams.
ordered_set
👍 32 ⬇️ 30.7K
Dart 3 compatibleMaintenance Status: Good
A simple implementation of an Ordered Set for Dart that allows multiple items with the same priority.
async_builder
👍 66 ⬇️ 9
Dart 3 compatibleMaintenance Status: Average
Flutter Future and Stream builder with less boilerplate and better error handling.
computer
👍 61 ⬇️ 1.1K
Dart 3 compatibleMaintenance Status: Poor
Easy to use pool of concurrent workers with compute() like API.
flutter_exit_app
👍 44 ⬇️ 14.6K
Dart 3 compatibleMaintenance Status: Good
A flutter plugin provides the best way to exit the app doesn't call exit(0) in dart code.
supercharged_dart
👍 33 ⬇️ 23K
Dart 3 compatibleMaintenance Status: Poor
Supercharged brings all the comfort features from languages like Kotlin to all Dart developers.
sortedmap
👍 43 ⬇️ 14.3K
Dart 3 compatibleMaintenance Status: Good
A map of objects which can be sorted and filtered on both their key and value
flinq
👍 57 ⬇️ 1.7K
Dart 3 compatibleMaintenance Status: Poor
Extended capabilities for collections. It's a bunch of shortcuts to avoid unnecesary boilerplate work with collections.
event
👍 48 ⬇️ 8.7K
Dart 3 compatibleMaintenance Status: Good
Create lightweight custom Events, that allow interested subscribers to be notified that something has happened.
oxidized
👍 47 ⬇️ 8.8K
Dart 3 compatibleMaintenance Status: Good
Definitions of Rust-like types, Option and Result, to promote safer programming.
nepali_utils
👍 50 ⬇️ 2.9K
Dart 3 compatibleMaintenance Status: Good
A pure dart package with collection of Nepali Utilities like Date converter, Date formatter, DateTime, Nepali Numbers, Nepali Unicode, Nepali Moments and many more.
hetu_script
👍 50 ⬇️ 21
Dart 3 compatibleMaintenance Status: Poor
Hetu is a lightweight scripting language for embedding in Flutter apps.
list_ext
👍 41 ⬇️ 6.6K
Dart 3 compatibleMaintenance Status: Poor
Dart extension methods for Iterable and List. You can easily sum, count elements and many more.
throttling
👍 41 ⬇️ 6.5K
Dart 3 compatibleMaintenance Status: Average
Contain "throttling" and "debouncing" async helper classes with listeners
executor
👍 27 ⬇️ 17K
Dart 3 compatibleMaintenance Status: Good
Executes async tasks with a configurable maximum concurrency and rate.
rx_command
👍 45 ⬇️ 518
Dart 3 compatibleMaintenance Status: Poor
Reactive event handler wrapper class inspired by ReactiveUI.
sealed_unions
👍 45 ⬇️ 65
Dart 3 compatibleMaintenance Status: Poor
Sealed Unions for Dart
stack
👍 37 ⬇️ 6K
Dart 3 compatibleMaintenance Status: Average
A package for stack data structure. have the push, pop, size, length, and top functionalities.
dartlin
👍 35 ⬇️ 7K
Dart 3 compatibleMaintenance Status: Poor
Dartlin is a helper library that provides readable methods with which you can write cleaner looking code.
dart_helper_utils
👍 41 ⬇️ 1K
Dart 3 compatibleMaintenance Status: Good
This package offers a collection of Dart utilities, tools for converting dynamic objects to various types, and extending core Dart classes with extensions.
either_option
👍 41 ⬇️ 515
Dart 3 compatibleMaintenance Status: Poor
The simple library for Error Handling with functionnal programming concept
daily_extensions
👍 40 ⬇️ 226
Dart 3 compatibleMaintenance Status: Good
Set of most useful Dart extensions for daily use that increases development velocity.
integral_isolates
👍 36 ⬇️ 2.8K
Dart 3 compatibleMaintenance Status: Average
The power of Dart's compute function, but using a long lived isolate.
optional
👍 38 ⬇️ 225
Dart 3 compatibleMaintenance Status: Poor
An implementation of the Optional type, which helps avoid dealing with null references
schedulers
👍 31 ⬇️ 4K
Dart 3 compatibleMaintenance Status: Poor
Dart library for running asynchronous functions on time. Useful for load balancing, rate limiting, lazy execution.
dart_either
👍 13 ⬇️ 18.9K
Dart 3 compatibleMaintenance Status: Good
Either monad for Dart language and Flutter framework. Type-safe error handling, railway oriented programming. Supports Monad comprehensions, async map, async flatMap.
easy_isolate_mixin
👍 33 ⬇️ 529
Dart 3 compatibleMaintenance Status: Average
A simplified mixin for launching Dart isolates in Flutter, seamlessly working with Flutter plugins
combine
👍 30 ⬇️ 2.6K
Dart 3 compatibleMaintenance Status: Good
A Flutter package which allows you to work with MethodChannels in Isolate and provides simplified Isolate and Thread Pool API.
sorted
👍 31 ⬇️ 230
Dart 3 compatibleMaintenance Status: Poor
Sort lists of complex objects with ease. Simple but powerful extension method.
flutter_helper_kit
👍 30 ⬇️ 69
Dart 3 compatibleMaintenance Status: Good
flutter_helper_kit helps to improve less code extensions and widgets.
extension_utils
👍 30 ⬇️ 40
Dart 3 compatibleMaintenance Status: Poor
A util library that contains various extensions for strings, lists, maps, numbers and more.
isolated_download_manager
👍 29 ⬇️ 455
Dart 3 compatibleMaintenance Status: Average
File download manager based on reusable isolates with progress, cancellation, pause and resume
enhanced_future_builder
👍 29 ⬇️ 239
Dart 3 compatibleMaintenance Status: Poor
Wrapper that improves readability and solves the common refiring FutureBuilder problem
isolate_pool_2
👍 28 ⬇️ 936
Dart 3 compatibleMaintenance Status: Good
Just like a thread pool, but with isolates. The package allows creating up-and-running isolates that can accept requests and do heavy lifting outside main isolate
kotlin_flavor
👍 25 ⬇️ 2.7K
Dart 3 compatibleMaintenance Status: Poor
An utility package for providing static extension methods familiar in Kotlin.
actors
👍 26 ⬇️ 418
Dart 3 compatibleMaintenance Status: Average
Actors Model library for Dart. It is a thin wrapper around Dart's 'Isolate' that makes them much easier to use.
binary_tree
👍 26 ⬇️ 84
Dart 3 compatibleMaintenance Status: Good
Self-Balancing Binary Search Tree for Dart. BST is implemented as Iterable. There are many operations such as greaterThen, lessThenOrEqual (create sublist), max , min etc.
disposebag
👍 20 ⬇️ 4.7K
Dart 3 compatibleMaintenance Status: Poor
A package helps to cancel StreamSubscriptions and close Sinks.
swiss_knife
👍 18 ⬇️ 4.5K
Dart 3 compatibleMaintenance Status: Good
Dart Useful Tools - collections, math, date, uri, json, events, resources, regexp, etc...
ms_map_utils
👍 21 ⬇️ 1.8K
Dart 3 compatibleMaintenance Status: Poor
A dart package that implement a lot of util functions for a Map
match
👍 23 ⬇️ 116
Dart 3 compatibleMaintenance Status: Poor
Dart library with match annotation for generating custom match extensions and extension methods for dart builtin types
dart_extensions_methods
👍 22 ⬇️ 551
Dart 3 compatibleMaintenance Status: Poor
Extensions for different types similar to kotlin. Methods for the next set of types: String, bool, Iterable, List. Also contains some global extensions and class Pair
selector
👍 21 ⬇️ 57
Dart 3 compatibleMaintenance Status: Poor
Multi type supported platform selector to write functional programming.
flutter_readable
👍 20 ⬇️ 400
Dart 3 compatibleMaintenance Status: Good
extensions and helpers for dart to save time , make the code more readable and smaller
byte_flow
👍 19 ⬇️ 842
Dart 3 compatibleMaintenance Status: Poor
Byte flow is a pure dart , dependency less library that provides common utility functions for lists and strings
collection_ext
👍 17 ⬇️ 1.1K
Dart 3 compatibleMaintenance Status: Poor
A set of useful extension methods for Dart collections, designed for the purpose of making it easier to write functional-programming-styled, concise Dart code.
dart_extensions_pro
👍 18 ⬇️ 31
Dart 3 compatibleMaintenance Status: Good
A Dart package that provides handy extensions and helper functions, designed to simplify and speed up development, making coding more efficient and streamlined.
fsm2
👍 16 ⬇️ 563
Dart 3 compatibleMaintenance Status: Good
FSM2 provides an implementation of the core design aspects of the UML state diagrams allowing both declarative transitions and dynamic transitions along with Guard Conditions.
stilo
👍 16 ⬇️ 73
Dart 3 compatibleMaintenance Status: Poor
Stilo is a utility-first Flutter library that gives you all of the building constants you need to build designs without defining common styles
extensionresoft
👍 7 ⬇️ 377
Dart 3 compatibleMaintenance Status: Good
Boost your Flutter development with reusable widgets, utilities, and extensions for advanced image handling, secure PIN entry, internet connectivity checks, storage management, and more.
error_or
👍 5 ⬇️ 46
Dart 3 compatibleMaintenance Status: Average
Return a result ErrorOr with either a value T or an error Object.
subscription_holder
👍 4 ⬇️ 127
Dart 3 compatibleMaintenance Status: Average
Subscription Holder holds StreamSubscriptions and dispose all conveniently.
ovo
👍 4 ⬇️ 21
Dart 3 compatibleMaintenance Status: Average
OvO is a Dart-first schema declaration and validation library.
data_migration
👍 2 ⬇️ 19
Dart 3 compatibleMaintenance Status: Good
A library for applying a series of migrations to update old versions of data structures to the most recent one.
hetu_script_flutter
👍 2 ⬇️ 12
Dart 3 compatibleMaintenance Status: Poor
Extension for Hetu Script. Makes it easier to use Hetu Script in Flutter apps.
extensions_pro
👍 1 ⬇️ 34
Dart 3 compatibleMaintenance Status: Good
Extensions Pro simplifies your development process, making it faster and more efficient.
pending_operations
👍 0 ⬇️ 88
Dart 3 compatibleMaintenance Status: Poor
A class for tracking operations and waiting until all of them have completed
hetu_script_dev_tools
👍 0 ⬇️ 7
Dart 3 compatibleMaintenance Status: Poor
Extensions for Hetu Script dart package. Includes file system resource context helper class and command line REPL for Hetu Script.
flutter_money_formatter
👍 95 ⬇️ 85
Maintenance Status: Poor
FlutterMoneyFormatter is a Flutter extension to formatting various types of currencies according to the characteristics you like, without having to be tied to any localization.
multi_sort
👍 27 ⬇️ 40
Maintenance Status: Poor
A fast and powerful Flutter package helps you sort a list of objects by one or more properties at the same time.
isolate_image_compress
👍 24 ⬇️ 653
Maintenance Status: Poor
IsolateImageCompress is a package to compress and resize the images in isolate (IsolateFlutter).
streams_channel
👍 14 ⬇️ 134
Maintenance Status: Poor
StreamsChannel is inspired from EventChannel. It allows to create streams of events between Flutter and platform side.
flutter_persistent_queue
👍 10 ⬇️ 31
Maintenance Status: Poor
Simple file-based non-volatile persistent queue implementation for flutter. Ideal for in-device sequential buffers that must persist between app runs.
merge_map
👍 5 ⬇️ 222
Maintenance Status: Poor
Combine multiple Maps into one. Equivalent to Object.assign in JS.
inherited_stream
👍 5 ⬇️ 128
Maintenance Status: Poor
An inherited widget for Streams, which updates its dependencies when the stream emits data.