whatisgithub

Popular Kotlin repositories on GitHub, each answered in plain English for non-coders: what it is, its tech stack, and how to run it.

• topjohnwu/magiskMagisk is an Android system modification tool that applies changes without altering the base system, allowing
• 2dust/v2rayngAndroid app that routes your device's internet traffic through V2Ray proxy servers, supporting multiple protoc
• jetbrains/kotlinThe official source repository for the Kotlin programming language, maintained by JetBrains. Contains the comp
• square/okhttpOkHttp is a networking library for Java, Kotlin, and Android apps that makes HTTP requests cleaner and faster
• gedoor/legadoFree Android app for reading online novels from any website by defining custom scraping rules, with no ads and
• android/architecture-samplesAndroid Architecture Samples is Google's official reference app showing developers how to correctly structure
• bannedbook/fanqiangCurated collection of guides and tools to bypass internet censorship, particularly China's Great Firewall. Cov
• gkd-kit/gkdAn Android app that automatically taps elements on your screen — like dismissing ads or skipping startup dialo
• shadowsocks/shadowsocks-androidShadowsocks for Android tunnels your phone's internet traffic through an encrypted proxy to bypass internet ce
• alibaba/p3cAlibaba p3c is a set of 49 automated Java code-quality rules and IDE plugins for IntelliJ IDEA and Eclipse tha
• square/leakcanaryLeakCanary is an Android development library that automatically detects memory leaks in your app while you tes
• signalapp/signal-androidSignal Android is the official open-source Android app for Signal private messaging — it keeps your texts, voi
• revanced/revanced-managerReVanced Manager is an Android app that lets you apply community-built patches to other apps on your phone — r
• kavishdevar/librepodsAndroid app that restores Apple AirPods features (noise cancellation, battery display, auto-pause) that Apple
• junkfood02/sealSeal is a free, ad-free Android app that downloads videos and audio from thousands of websites — YouTube, TikT
• pppscn/smsforwarderAndroid app that monitors SMS, calls, and notifications, then forwards them to messaging platforms, email, web
• rikkaapps/shizukuAndroid library that lets apps access system-level APIs by routing requests through a privileged background se
• cymchad/baserecyclerviewadapterhelperAn Android library that removes the boilerplate from building scrollable lists, letting you display feeds, cat
• android/compose-samplesOfficial sample Android apps demonstrating Jetpack Compose, Google's modern toolkit for building app interface
• google-ai-edge/galleryRun AI language models directly on your phone with no internet or privacy concerns. Download a model, chat off
• google/ioschedReference Android app from Google I/O conference showing how to build a well-structured production app with mo
• android/nowinandroidA fully working Android app from Google's Android team that demonstrates, in real production-quality code, how
• matsuridayo/nekoboxforandroidNekoBox for Android is a proxy client app that supports a wide range of protocols including Shadowsocks, VMess
• afollestad/material-dialogsA Kotlin library for Android that replaces default system dialogs with polished Material Design pop-ups — incl
• jetbrains/compose-multiplatformA Kotlin UI framework from JetBrains that lets you write one app interface and share it across Android, iOS, d
• square/picassoA now-deprecated Android library from Square that downloads, caches, and displays remote images in your app wi
• google/flexbox-layoutAn Android library that brings the web's flexible box layout system to Android apps, letting items grow, shrin
• android/sunflowerSample Android gardening app from Google showing how to migrate an existing View-based app to Jetpack Compose
• open-ani/animekoAn open-source anime-watching app for Android, iOS, Windows, macOS, and Linux that combines episode tracking,
• lottie-react-native/lottie-react-nativeReact Native component that plays Lottie animations — JSON files exported from Adobe After Effects — natively
• tiann/kernelsuA kernel-based root solution for Android. Grants unrestricted admin access by hooking into the kernel rather t
• nickbutcher/plaidPlaid is an Android reference app showcasing Material Design with a feed of design news, rewritten in Kotlin u
• kotlin/ankoDeprecated Kotlin library that let Android developers build UIs, run SQLite queries, and use coroutines direct
• amir1376/ab-download-managerA free desktop download manager that splits files into parallel parts for faster downloads. Runs on Windows, m
• mamoe/miraimirai is a Kotlin library that implements the QQ Android client protocol so you can build cross-platform QQ ch
• ktorio/ktorKotlin web framework for building asynchronous HTTP servers and APIs, kept lightweight by letting you install
• mobile-dev-inc/maestroAn open-source tool for writing mobile app tests as simple YAML files — describe taps, swipes, and text input
• iamgio/quarkdownQuarkdown lets you write documents in an enhanced Markdown format with programmable functions, then export the
• kotlin/kotlinx.coroutinesOfficial Kotlin library for writing asynchronous code in a readable, sequential style — lets apps fetch data o
• thunderbird/thunderbird-androidThunderbird for Android is a free, open-source email app from Mozilla that manages multiple email accounts wit
• android/uampA deprecated Google sample Android music player app in Kotlin showing how to build audio playback that works a
• openhub-store/github-storeGitHub Store is a free open-source app that turns GitHub Releases into a familiar app-store experience — brows
• t8rin/imagetoolboxA free and open-source Android app with dozens of photo editing tools including cropping, filters, background
• tamsiree/rxtoolRxTool is a modular Kotlin library for Android developers that bundles common utilities — UI components, camer
• libre-tube/libretubeA free, open-source Android YouTube client that routes your traffic through the Piped privacy proxy so Google
• yiiguxing/translationpluginTranslationPlugin adds instant translation to JetBrains IDEs like IntelliJ IDEA and Android Studio, letting de
• coil-kt/coilCoil is a Kotlin image loading library for Android and Compose Multiplatform apps that fetches and displays re
• mikepenz/materialdrawerMaterialDrawer is an Android library that adds a ready-made Material Design navigation drawer — the sliding si
• wasabeef/recyclerview-animatorsAn Android library that adds smooth animations when items are added, removed, or scroll into view in a list. D
• heapy/awesome-kotlinA community-curated list of Kotlin libraries, tools, articles, videos, and other resources for developers buil
• yujincheng08/biliroamingBiliRoaming is an Android add-on that removes geographic content locks on the Bilibili video app, letting user
• shabinder/spotiflyerA music downloader app for Android and desktop that saves songs, albums, and playlists from Spotify, YouTube M
• ankidroid/anki-androidThe Android version of Anki, a free flashcard app that uses spaced repetition and the FSRS algorithm to help y
• hectorqin/readerSelf-hosted server that brings the popular Chinese legado e-book reader to desktop browsers and iOS, letting y
• jakewharton/timberTimber is a lightweight Android logging library that automatically tags log messages with the calling class na
• appintro/appintroAn Android library that adds swipeable onboarding intro screens to any app with a few lines of code, including
• yairm210/uncivA free, open-source Civilization V remake for Android and desktop that runs on low-powered devices, skips high
• jetbrains/ideavimAn official JetBrains plugin that adds Vim keyboard controls to IntelliJ IDEA, PyCharm, WebStorm, GoLand, and
• square/moshiMoshi is a JSON library from Square for Android, Java, and Kotlin that converts between JSON text and your app
• breezy-weather/breezy-weatherBreezy Weather is a privacy-focused open-source Android weather app supporting 50+ weather sources with detail
• vfsfitvnm/vimusicAn Android app that streams music from YouTube Music for free, with offline caching, synchronized lyrics, and
• metrolistgroup/metrolistA free Android app that streams YouTube Music with features the official app lacks, including offline download
• firebase/quickstart-androidA collection of standalone Android app samples from Google's Firebase team, each showing exactly how to integr
• jetbrains/exposedAn official JetBrains database library for Kotlin that lets you query relational databases using type-safe Kot
• maxrave-dev/simpmusicA free, open-source Android and desktop music player that streams from YouTube Music without ads or a subscrip
• square/okioA utility library from Square that simplifies reading and writing files, network sockets, and byte data in And
• bitwarden/androidThis is the open-source Android source code for Bitwarden's password manager and two-factor authentication app
• deniscerri/ytdlnisAn Android app that downloads audio and video from over 1000 websites including YouTube — paste a link, pick y
• kotatsuapp/kotatsuA free, open-source Android manga reader that connects to over 1,200 online sources, supports offline download
• skydoves/pokedexA sample Android app that fetches and displays Pokémon data from a public API, built as a reference for modern
• florisboard/florisboardA free, open-source Android keyboard that keeps all your data on your device instead of sending it to company
• zhanghai/materialfilesAn open-source Android file manager with Material Design styling that handles network storage (FTP, SFTP, SMB,
• ackites/nrfrAndroid app that changes the country code your phone reads from its SIM card, fixing carrier compatibility iss
• bmax121/apatchAn Android rooting tool that patches the kernel directly, supports existing Magisk-compatible modules, and all
• arisguimera/android-expertFree beginner Android development course in Spanish that teaches Kotlin from zero and walks through building f
• aniyomiorg/aniyomiA free, open-source Android app that combines manga reading and anime watching in one place, with a built-in v
• zetbaitsu/compressorA Kotlin Android library that shrinks photo file sizes before uploading or storing them, with a one-liner API
• readyouapp/readyouA free open-source RSS reader app for Android with Material You design that collects articles from blogs and n
• ceuilisa/pixiv-shaftAn unofficial open-source Android app for Pixiv that lets you browse illustrations, manga, and novels with dar
• reactivex/rxkotlinA small Kotlin library that adds convenience shortcuts to RxJava, making reactive programming code more concis
• jetbrains/kotlin-nativeArchived original repository for Kotlin/Native, JetBrains' technology that compiles Kotlin to run directly on
• detekt/detektA tool that automatically scans Kotlin code for problems, style issues, and overly complex logic before you ru
• libchecker/libcheckerAn Android app that shows which third-party libraries are used by apps installed on your phone, including whet
• droid-ify/clientOpen-source Android app for browsing and installing free software from F-Droid repositories with a cleaner int
• gurupreet/composecookbookSample Android app demonstrating hundreds of Jetpack Compose UI components, animations, and layouts, including
• sqldelight/sqldelightA Kotlin tool that converts SQL queries written in .sql files into type-safe, compiler-checked Kotlin code, ca
• igorwojda/android-showcaseA sample Android music-discovery app built to demonstrate how to structure a production-ready mobile app using
• sourcerer-io/sourcerer-appA developer profiling tool that scans GitHub and local git repositories to build a visual profile showing whic
• chrisbanes/tiviTivi was a TV show tracking app built with Kotlin Multiplatform that shared code across Android, iOS, and desk
• kunzisoft/keepassdxA free, open-source Android password manager that stores all your passwords in an encrypted file on your devic
• d4rken-org/sdmaid-seAn Android app for cleaning and managing phone storage — removes leftover files from uninstalled apps, clears
• androidx/androidxThe official source repository where Google develops Android Jetpack — a suite of libraries for Android app de
• z-huang/innertuneInnerTune is a free Android music app that streams YouTube and YouTube Music without ads or a paid subscriptio
• airbnb/mavericksAirbnb's Android framework for building app screens faster — each screen holds its data in a state object, a V
• kotlin/kotlinx.serializationJetBrains' official Kotlin library for converting data objects into JSON, Protobuf, CBOR, and other formats —
• aistra0528/hailA free Android app that freezes, hides, or suspends apps you are not using to save battery and stop background
• mygod/vpnhotspotAndroid app that shares your phone's active VPN connection with other devices over a Wi-Fi hotspot. Requires r
• kickstarter/android-ossThe full source code of Kickstarter's official Android app, released publicly so developers can study how a re
• drakeet/multitypeMultiType is an Android library that makes it easy to build scrolling lists with many different visual styles.
• sagernet/sagernetAn Android app that routes internet traffic through a proxy to bypass censorship and access blocked content. S

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