The
Flutter-powered AI app builder Category Utilities
Top Utilities packages by yearly commits
General-purpose helpers: extensions, formatters, validators, algorithms, data structures
Ranks repos by total commits over the past 52 weeks. Activity, not quality. A finished library may rank low. A thrashing one may rank high.
Packages need a public GitHub repo, at least 50 commits in the past 52 weeks, and at least 100 downloads a day. Monorepo siblings collapse to the highest-downloaded package.
a2ui_core first shipped 4 months ago. Ranks #5 in Utilities by commit activity, #720 by daily downloads in the same category.
| Rank | Package | Description | Commits / yr | Last commit | Downloads / day | Stars |
|---|---|---|---|---|---|---|
| #1 | 🇺🇸 dart.dev | Annotations used to express developer intentions that can't otherwise be deduced by statically analyzing source code. | 5.9K | 16d ago | 425.3K | ★ 11.2K |
| #2 | 🇺🇸 community.ag-ui.com | Dart SDK for AG-UI protocol - standardizing agent-user interactions through event-based communication | 2.6K | 23d ago | 801 | ★ 15.1K |
| #3 | 🇺🇸 atsign.org | A library of Dart and Flutter utility classes that are used across other components of the atPlatform. | 1.8K | 23d ago | 631 | ★ 1.4K |
| #4 | 🇺🇸 flutter.dev | A Dart package for reading XDG directory configuration information on Linux. | 1.6K | 13d ago | 223.7K | ★ 5.3K |
| #5 | 🇺🇸 labs.flutter.dev | Core package for A2UI protocol. | 1.1K | 5d ago | 106 | ★ 16.1K |
| #6 | 🇯🇵 atprotodart.com | Core library for parsing IPFS-related things. This package is mainly used by https://atprotodart.com packages. | 1K | 16d ago | 142 | ★ 207 |
| #7 | 🇸🇪 serverpod.dev | Wraps an object in a dedicated isolate and forwards method calls to it, so timer- or event-loop-driven work (e.g. progress spinners) keeps running even when the calling isolate's event loop is blocked. Dependency-free. | 767 | 1d ago | 9K | ★ 3.3K |
| #8 | 🇺🇸 sellsbrothers.com | Interface definitions for dartantic_ai for use in building custom providers. | 611 | 1mo ago | 109 | ★ 91 |
| #9 | 🇺🇸 xsoulspace.dev | Flutter MCP Toolkit to add Flutter-specific methods to the MCP server | 554 | 22d ago | 445 | ★ 359 |
| #10 | 🇺🇸 dart.dev | A library that contains a Dart API for the JSON-based protocol for `hook/build.dart` and `hook/link.dart`. | 480 | 18d ago | 348.9K | ★ 270 |
| #11 | 🇺🇸 labs.flutter.dev | A full-featured package used to build and validate JSON schemas in Dart. | 461 | 25d ago | 2.4K | ★ 1.7K |
| #12 | 🇵🇦 goldenm.com | Layrz API models for Dart/Flutter. This package contains the models used by the Layrz API. | 459 | 18d ago | 372 | ★ 3 |
| #13 | Portable multi-language VM: parse, run and translate Dart, Java, Kotlin, Go, C#, JavaScript, TypeScript, Lua and Python — with on-the-fly Wasm compilation and MCP/LSP servers. | 400 | 27d ago | 147 | ★ 82 | |
| #14 | 🇸🇴 sprk.so | Primitive types and utilities for AT Protocol. This package provides basic data structures and utilities used across AT Protocol implementations. | 366 | 1mo ago | 136 | ★ 4 |
| #15 | 🇺🇸 genkit.dev | MCP integration for Genkit Dart. | 325 | 4d ago | 355 | ★ 156 |
| #16 | 🇺🇸 aws-amplify.com | Smithy client runtime for Dart with common utilities for I/O and serialization. | 302 | 10d ago | 3.5K | ★ 1.4K |
| #17 | 🇨🇴 leancode.co | MCP server that lets AI agents (Claude, Copilot, Cursor) inspect and interact with running Flutter apps — tap, scroll, type, and screenshot. | 258 | 1mo ago | 2.1K | ★ 375 |
| #18 | 🇪🇸 vyp.dev | A common platform interface for the zstandard plugin. | 252 | 5mo ago | 415 | ★ 11 |
| #19 | 🇨🇦 zcreations.info | A pure Dart cross-platform casting package supporting Chromecast (CASTV2), AirPlay, and DLNA with built-in HTTP proxy for header injection. | 226 | 28d ago | 114 | ★ 8 |
| #20 | 🇺🇸 tools.dart.dev | Provides a standard representation for source code locations and spans. | 215 | 15d ago | 395.6K | ★ 113 |
| #21 | 🇨🇭 lukas-renggli.ch | Full-featured XML for Dart — DOM parsing, SAX streaming, XPath 3 querying, and a fluent builder API. | 215 | 1mo ago | 359.8K | ★ 230 |
| #22 | 🇮🇸 tsin.is | Provides data for world languages in the form of sealed classes. | 200 | 19d ago | 820 | ★ 66 |
| #23 | 🇺🇸 terminal.studio | SSH and SFTP client written in pure Dart, aiming to be feature-rich as well as easy to use. | 197 | 23d ago | 2.6K | ★ 259 |
| #24 | halildurmus.dev | Allocation tracking and leak detection for Dart FFI code. | 194 | 26d ago | 55.3K | ★ 847 |
| #25 | 🇦🇺 onepub.dev | A collection of functions that allow you to interact with the file system and OS environment from any platform that supports dart:io. Copy, move, delete files and directory trees, search for files, create temp files and directories. | 187 | 17d ago | 2.6K | ★ 265 |
| #26 | FlatBuffers reading and writing library for Dart. Based on original work by Konstantin Scheglov and Paul Berry of the Dart SDK team. | 186 | 2mo ago | 6.5K | ★ 26.3K | |
| #27 | leanflutter.dev | A simple shell commands executor. | 180 | 7d ago | 705 | ★ 1.1K |
| #28 | stduritemplate.proj.sbs | A Dart implementation of URI Templates defined in (RFC 6570). | 168 | 15d ago | 715 | ★ 51 |
| #29 | 🇰🇿 yet-another.dev | A package for formatting Dart strings like a format method in Python. | 163 | 18d ago | 1.4K | ★ 16 |
| #30 | A collection of general purpose libraries for dart projects | 161 | 9d ago | 128 | ★ 0 | |
| #31 | A pure Dart implementation of Handlebars template engine. | 147 | 5d ago | 650 | ★ 559 | |
| #32 | 🇺🇸 jamcorder.com | A common platform interface for the flutter_blue_plus plugin. | 145 | 29d ago | 7.1K | ★ 997 |
| #33 | yom-engine.com | A Dart in-memory cache library with FIFO, LRU, MRU, LFU, TTL expiry, async-safe variants, and monitoring metrics. | 139 | 2mo ago | 111 | ★ 2 |
| #34 | 🇺🇸 invisiblewrench.com | A common platform interface for the FlutterMidiCommand plugin. | 130 | 22d ago | 148 | ★ 119 |
| #35 | 🇯🇵 koji-1009.com | A common platform interface for the flutter_secure_storage_x plugin | 126 | 1mo ago | 127 | ★ 2 |
| #36 | 🇬🇧 tusar.dev | A query string encoding and decoding library for Dart. Ported from qs for JavaScript. | 124 | 1mo ago | 4.4K | ★ 6 |
| #37 | 🇺🇸 sass-lang.com | A Sass implementation in Dart. | 124 | 24d ago | 3.4K | ★ 4.2K |
| #38 | The windows implementation of Flutter plugin for google places sdk | 123 | 19d ago | 259 | ★ 3 | |
| #39 | 🇺🇸 fluttercommunity.dev | Flutter plugin providing detailed information about the device (make, model, etc.), and Android or iOS version the app is running on. | 118 | 1mo ago | 124K | ★ 1.9K |
| #40 | Flutter three_js_math package converted from threejs and three_dart package to be used with three_js. | 116 | 15d ago | 176 | ★ 91 | |
| #41 | 🇺🇸 launchdarkly.com | Common dart libraries used by LaunchDarkly SDKs. This is an internal package not designed for general use. | 112 | 15d ago | 3.2K | ★ 20 |
| #42 | vincentsanicolas.me | A streaming JSON parser optimized for LLM responses. Parse JSON reactively as it streams in, with path-based subscriptions and type-safe property access. | 103 | 1mo ago | 1.2K | ★ 14 |
| #43 | 🇺🇸 tools.dart.dev | An API for defining and verifying files and directory structures. | 101 | 15d ago | 11K | ★ 536 |
| #44 | 🇯🇵 codingfeline.com | Unicode 17.0 Normalization - NFC, NFD, NFKC, NFKD. This is a Dart port of [walling/unorm](https://github.com/walling/unorm). | 97 | 15d ago | 7.3K | ★ 15 |
| #45 | 🇩🇪 sdk.usercentrics.com | The Usercentrics Apps SDK is a Consent Management Platform framework that ensures legal compliance for different legal frameworks. | 92 | 16d ago | 1.1K | ★ 6 |
| #46 | 🇬🇧 invertase.io | Parse a git commit message using the Conventional Commits specification. | 91 | 1mo ago | 2.5K | ★ 1.5K |
| #47 | memento.engineering | A framework-agnostic Seed/Branch keyed-reconcile tree engine — Flutter's element/reconciliation model extracted to pure, bare-VM Dart. | 91 | 10d ago | 136 | ★ 2 |
| #48 | 🇺🇸 farend.net | Library to calculate prayer times for muslims. Based on precise astronomical formula. | 85 | 3mo ago | 167 | ★ 21 |
| #49 | 🇺🇸 ethanblake.xyz | A flexible Dart bytecode compiler and interpreter written in Dart, enabling dynamic execution and code push for AOT Dart apps. | 85 | 3mo ago | 143 | ★ 400 |
| #50 | 🇺🇸 brickhub.dev | A Dart template generator which helps teams generate files quickly and consistently.
| 79 | 5mo ago | 12.2K | ★ 1.1K |
| #51 | 🇺🇸 labs.dart.dev | Time zone databases and time zone aware `DateTime`. | 75 | 1mo ago | 101.6K | ★ 48 |
| #52 | 🇺🇸 google.dev | Function for sanitizing HTML to prevent XSS by restrict elements and attributes to a safe subset of allowed values. | 75 | 1mo ago | 28.8K | ★ 508 |
| #53 | 🇺🇸 fluttertv.dev | tvOS (Apple TV) implementation of the flutter_secure_storage Flutter plugin, provided by flutter-tvos. | 73 | 4d ago | 1.3K | ★ 0 |
| #54 | Retrieve the current Dart and Flutter SDK semantic versions with easy-to-use nullable getters for streamlined version management. | 72 | 1mo ago | 792 | ★ 3 | |
| #55 | 🇯🇵 eaglesakura.com | Dart runtime extensions. | 70 | 1mo ago | 1.2K | ★ 2 |
| #56 | 🇨🇳 mixin.dev | A flutter plugin which could read image,files from clipboard and write files to clipboard. | 66 | 1mo ago | 4.8K | ★ 511 |
| #57 | 🇺🇸 flutter.dev | A templating library that implements the Mustache template specification | 65 | 22d ago | 269.7K | ★ 12 |
| #58 | 🇨🇦 nfet.net | Plugin that allows Flutter apps to generate and print documents to compatible printers on Android, iOS, macOS, Windows, and Linux, as well as web print.
| 65 | 1mo ago | 25.8K | ★ 1.5K |
| #59 | A package to get the ip address of the current device. Uses https://api64.ipify.org to get the system IP. | 64 | 9mo ago | 568 | ★ 29 | |
| #60 | Generated country class with country_generator using countries. | 61 | 1mo ago | 556 | ★ 4 | |
| #61 | ethicnology.com | Pure-Dart Nostr protocol library. Events, signing, NIP-44 encryption, gift wrap, and 35+ NIPs. Transport-agnostic, Flutter Web compatible. | 61 | 3mo ago | 156 | ★ 70 |
| #62 | flutter-it.dev | Simple direct Service Locator that allows to decouple the interface from a concrete implementation and to access the concrete implementation from everywhere in your App" | 60 | 6mo ago | 65.1K | ★ 1.5K |
| #63 | 🇺🇸 google.dev | Library for use by client APIs generated from Discovery Documents. | 60 | 21d ago | 31.3K | ★ 419 |
| #64 | 🇩🇪 inlavigo.com | gg_json offers a bunch of JSON helpers used in various context. | 58 | 9d ago | 293 | ★ 1 |
| #65 | medz.dev | Composable number formatting and parsing for decimals, compact values, percentages, byte sizes, currency display text, and locale-aware numerals. | 52 | 1mo ago | 114 | ★ 12 |
| #66 | 🇺🇸 dart.dev | Utility functions and classes related to the 'dart:async' library. | 50 | 26d ago | 402.1K | ★ 71 |