| #1 | JetBrains/kotlin The Kotlin Programming Language. | Kotlin | | |
| #2 | square/okhttp Square’s meticulous HTTP client for the JVM, Android, and GraalVM. | Kotlin | | |
| #3 | android/architecture-samples A collection of samples to discuss and showcase different architectural tools and patterns for Android apps. | Kotlin | | |
| #4 | bannedbook/fanqiang 翻墙-科学上网 | Kotlin | | |
| #5 | 2dust/v2rayNG A V2Ray client for Android, support Xray core and v2fly core | Kotlin | | |
| #6 | shadowsocks/shadowsocks-android A shadowsocks client for Android | Kotlin | | |
| #7 | gedoor/legado Legado 3.0 Book Reader with powerful controls & full functions❤️阅读3.0, 阅读是一款可以自定义来源阅读网络内容的工具，为广大网络文学爱好者提供一种方便、快捷舒适的试读体验。 | Kotlin | | |
| #8 | alibaba/p3c Alibaba Java Coding Guidelines pmd implements and IDE plugin | Kotlin | | |
| #9 | square/leakcanary A memory leak detection library for Android. | Kotlin | | |
| #10 | signalapp/Signal-Android A private messenger for Android. | Kotlin | | |
| #11 | gkd-kit/gkd 基于无障碍，高级选择器，订阅规则的自定义屏幕点击 Android 应用 \ | Kotlin | | |
| #12 | CymChad/BaseRecyclerViewAdapterHelper BRVAH:Powerful and flexible RecyclerAdapter | Kotlin | | |
| #13 | google/iosched The Google I/O Android App | Kotlin | | |
| #14 | android/compose-samples Official Jetpack Compose samples. | Kotlin | | |
| #15 | pppscn/SmsForwarder 短信转发器——监控Android手机短信、来电、APP通知，并根据指定规则转发到其他手机：钉钉群自定义机器人、钉钉企业内机器人、企业微信群机器人、飞书机器人、企业微信应用消息、邮箱、bark、webhook、Telegram机器人、Server酱、PushPlus、手机短信等。包括主动控制服务端与客户端，让你轻松远程发短信、查短信、查通话、查话簿、查电量等。（V3.0 新增）PS.这个APK主要是学习与自用，如有BUG请提ISSUE，同时欢迎大家提PR指正 | Kotlin | | |
| #16 | afollestad/material-dialogs 😍 A beautiful, fluid, and extensible dialogs API for Kotlin & Android. | Kotlin | | |
| #17 | square/picasso A powerful image downloading and caching library for Android | Kotlin | | |
| #18 | google/flexbox-layout Flexbox for Android | Kotlin | | |
| #19 | android/nowinandroid A fully functional Android app built entirely with Kotlin and Jetpack Compose | Kotlin | | |
| #20 | android/sunflower A gardening app illustrating Android development best practices with migrating a View-based app to Jetpack Compose. | Kotlin | | |
| #21 | JetBrains/compose-multiplatform Compose Multiplatform, a modern UI framework for Kotlin that makes building performant and beautiful user interfaces easy and enjoyable. | Kotlin | | |
| #22 | lottie-react-native/lottie-react-native Lottie wrapper for React Native. | Kotlin | | |
| #23 | nickbutcher/plaid An Android app which provides design news & inspiration as well as being an example of implementing material design. | Kotlin | | |
| #24 | Kotlin/anko Pleasant Android application development | Kotlin | | |
| #25 | mamoe/mirai 高效率 QQ 机器人支持库 | Kotlin | | |
| #26 | JunkFood02/Seal 🦭 Video/Audio Downloader for Android, based on yt-dlp, designed with Material You | Kotlin | | |
| #27 | ktorio/ktor Framework for quickly creating connected applications in Kotlin with minimal effort | Kotlin | | |
| #28 | MatsuriDayo/NekoBoxForAndroid NekoBox for Android / sing-box / universal proxy toolchain for Android | Kotlin | | |
| #29 | Kotlin/kotlinx.coroutines Library support for Kotlin coroutines | Kotlin | | |
| #30 | android/uamp A sample audio app for Android | Kotlin | | |
| #31 | RikkaApps/Shizuku Using system APIs directly with adb/root privileges from normal apps through a Java process started with app_process. | Kotlin | | |
| #32 | mihonapp/mihon Free and open source manga reader for Android | Kotlin | | |
| #33 | Tamsiree/RxTool Android开发人员不得不收集的工具类集合 \ | Kotlin | | |
| #34 | tiann/KernelSU A Kernel based root solution for Android | Kotlin | | |
| #35 | mikepenz/MaterialDrawer The flexible, easy to use, all in one drawer library for your Android project. Now brand new with material 2 design. | Kotlin | | |
| #36 | thunderbird/thunderbird-android Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail) | Kotlin | | |
| #37 | wasabeef/recyclerview-animators An Android Animation library which easily add itemanimator to RecyclerView items. | Kotlin | | |
| #38 | YiiGuxing/TranslationPlugin Translation plugin for IntelliJ based IDEs/Android Studio. | Kotlin | | |
| #39 | Heapy/awesome-kotlin A curated list of awesome Kotlin related stuff Inspired by awesome-java. | Kotlin | | |
| #40 | coil-kt/coil Image loading for Android and Compose Multiplatform. | Kotlin | | |
| #41 | Shabinder/SpotiFlyer Kotlin Multiplatform Music Downloader, Supports Spotify / Gaana / Youtube Music / Jio Saavn / SoundCloud. | Kotlin | | |
| #42 | JakeWharton/timber A logger with a small, extensible API which provides utility on top of Android's normal Log class. | Kotlin | | |
| #43 | AppIntro/AppIntro Make a cool intro for your Android app. | Kotlin | | |
| #44 | yujincheng08/BiliRoaming 哔哩漫游，解除B站客户端番剧区域限制的Xposed模块，并且提供其他小功能。An Xposed module that unblocks bangumi area limit of BILIBILI with miscellaneous features. | Kotlin | | |
| #45 | square/moshi A modern JSON library for Kotlin and Java. | Kotlin | | |
| #46 | JakeWharton/RxBinding RxJava binding APIs for Android's UI widgets. | Kotlin | | |
| #47 | JetBrains/ideavim IdeaVim – A Vim engine for JetBrains IDEs | Kotlin | | |
| #48 | ethereum-lists/chains provides metadata for chains | Kotlin | | |
| #49 | InsertKoinIO/koin Koin - a pragmatic lightweight dependency injection framework for Kotlin & Kotlin Multiplatform | Kotlin | | |
| #50 | vfsfitvnm/ViMusic An Android application for streaming music from YouTube Music. | Kotlin | | |
| #51 | ankidroid/Anki-Android AnkiDroid: Anki flashcards on Android. Your secret trick to achieve superhuman information retention. | Kotlin | | |
| #52 | libre-tube/LibreTube An alternative frontend for YouTube, for Android. | Kotlin | | |
| #53 | hectorqin/reader 阅读3服务器版，桌面端，iOS可用。后端 Kotlin + Spring Boot + Vert.x + Coroutine ；前端 Vue.js + Element。麻烦点点star，关注一下公众号【假装大佬】❗️ | Kotlin | | |
| #54 | firebase/quickstart-android Firebase Quickstart Samples for Android | Kotlin | | |
| #55 | yairm210/Unciv Open-source Android/Desktop remake of Civ V | Kotlin | | |
| #56 | square/okio A modern I/O library for Android, Java, and Kotlin Multiplatform. | Kotlin | | |
| #57 | JetBrains/Exposed Kotlin SQL Framework | Kotlin | | |
| #58 | iSoron/uhabits Loop Habit Tracker, a mobile app for creating and maintaining long-term positive habits | Kotlin | | |
| #59 | TeamVanced/VancedManager Vanced Installer | Kotlin | | |
| #60 | simplex-chat/simplex-chat SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱! | Kotlin | | |
| #61 | skydoves/Pokedex 🗡️ Pokedex demonstrates modern Android development with Hilt, Material Motion, Coroutines, Flow, Jetpack (Room, ViewModel) based on MVVM architecture. | Kotlin | | |
| #62 | uber/RIBs Uber's cross-platform mobile architecture framework - Android Repository | Kotlin | | |
| #63 | javalin/javalin A simple and modern Java and Kotlin web framework | Kotlin | | |
| #64 | facebook/litho A declarative framework for building efficient UIs on Android. | Kotlin | | |
| #65 | chrisbanes/cheesesquare Demos the new Android Design library. | Kotlin | | |
| #66 | google/accompanist A collection of extension libraries for Jetpack Compose | Kotlin | | |
| #67 | skydoves/android-developer-roadmap 🗺 The Android Developer Roadmap offers comprehensive learning paths to help you understand Android ecosystems. | Kotlin | | |
| #68 | mobile-dev-inc/Maestro Painless E2E Automation for Mobile and Web | Kotlin | | |
| #69 | recloudstream/cloudstream Android app for streaming and downloading media. | Kotlin | | |
| #70 | zetbaitsu/Compressor An android image compression library. | Kotlin | | |
| #71 | ReactiveX/RxKotlin RxJava bindings for Kotlin | Kotlin | | |
| #72 | JetBrains/kotlin-native Kotlin/Native infrastructure | Kotlin | | |
| #73 | bitwarden/android Bitwarden mobile app for Android. | Kotlin | | |
| #74 | sourcerer-io/sourcerer-app 🦄 Sourcerer app makes a visual profile from your GitHub and git repositories. | Kotlin | | |
| #75 | chrisbanes/tivi Tivi is a TV show tracking Android app, which connects to trakt.tv | Kotlin | | |
| #76 | florisboard/florisboard An open-source keyboard for Android which respects your privacy. Currently in early-beta. | Kotlin | | |
| #77 | zhanghai/MaterialFiles Material Design file manager for Android | Kotlin | | |
| #78 | igorwojda/android-showcase 💎 Android application following best practices: Kotlin, Coroutines, JetPack, Clean Architecture, Feature Modules, Tests, MVVM, DI, Static Analysis... | Kotlin | | |
| #79 | breezy-weather/breezy-weather A Material Design Weather Application | Kotlin | | |
| #80 | amir1376/ab-download-manager A Download Manager that speeds up your downloads | Kotlin | | |
| #81 | mozilla-mobile/fenix ⚠️ Fenix (Firefox for Android) moved to a new repository. It is now developed and maintained as part of: https://github.com/mozilla-mobile/firefox-android | Kotlin | | |
| #82 | Gurupreet/ComposeCookBook A Collection on all Jetpack compose UI elements, Layouts, Widgets and Demo screens to see it's potential | Kotlin | | |
| #83 | detekt/detekt Static code analysis for Kotlin | Kotlin | | |
| #84 | ACRA/acra Application Crash Reports for Android | Kotlin | | |
| #85 | pinterest/ktlint An anti-bikeshedding Kotlin linter with built-in formatter | Kotlin | | |
| #86 | sqldelight/sqldelight SQLDelight - Generates typesafe Kotlin APIs from SQL | Kotlin | | |
| #87 | arrow-kt/arrow Λrrow - The perfect companion for your Kotlin journey - Inspired by functional, data-oriented and concurrent programming | Kotlin | | |
| #88 | facebook/facebook-android-sdk Used to integrate Android apps with Facebook Platform. | Kotlin | | |
| #89 | ArisGuimera/Android-Expert Aprende a PROGRAMAR aplicaciones ANDROID en KOTLIN sin conocimientos previos | Kotlin | | |
| #90 | dbacinski/Design-Patterns-In-Kotlin Design Patterns implemented in Kotlin | Kotlin | | |
| #91 | airbnb/mavericks Mavericks: Android on Autopilot | Kotlin | | |
| #92 | drakeet/MultiType Flexible multiple types for Android RecyclerView. | Kotlin | | |
| #93 | kickstarter/android-oss Kickstarter for Android. Bring new ideas to life, anywhere. | Kotlin | | |
| #94 | SagerNet/SagerNet The universal proxy toolchain for Android | Kotlin | | |
| #95 | T8RIN/ImageToolbox 🖼️ Image Toolbox is a powerful app for advanced image manipulation. It offers dozens of features, from basic tools like crop and draw to filters, OCR, and a wide range of image processing options | Kotlin | | |
| #96 | Ashinch/ReadYou An Android RSS reader presented in Material You style. | Kotlin | | |
| #97 | aniyomiorg/aniyomi An app for manga and anime | Kotlin | | |
| #98 | Kotlin/kotlinx.serialization Kotlin multiplatform / multi-format serialization | Kotlin | | |
| #99 | Tapadoo/Alerter An Android Alerting Library | Kotlin | | |
| #100 | mockk/mockk mocking library for Kotlin | Kotlin | | |