Open Source Kotlin Software

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Browse free open source Kotlin Software and projects below. Use the toggles on the left to filter open source Kotlin Software by OS, license, language, programming language, and project status.

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  • 1
    TG WS Proxy Android

    TG WS Proxy Android

    Android local MTProto proxy server to bypass Telegram loading issues

    TG WS Proxy Android is an Android-based local MTProto proxy application designed to improve Telegram connectivity and bypass network restrictions using secure WebSocket connections. Built as a fork of Flowseal’s tg-ws-proxy project, the app routes Telegram traffic through Cloudflare WebSocket tunnels or directly to Telegram data centers for improved stability and performance. The application runs a local MTProto proxy powered by a native Go engine and integrates directly with compatible Telegram clients for quick setup. Designed with a modern Material 3 interface and Jetpack Compose, it provides an intuitive user experience alongside advanced networking features. TG WS Proxy Android also includes background service support, real-time connection logs, automatic updates, and customizable themes for better usability on mobile devices.
    Downloads: 957 This Week
    Last Update:
    See Project
  • 2
    Kotatsu

    Kotatsu

    Manga reader for Android

    Kotatsu is an open-source manga reader for Android that supports local file reading and integration with sources via Tachiyomi extensions. It offers a sleek UI, smooth reading experience, and the ability to import downloaded manga from various sources. Kotatsu is designed for offline reading and emphasizes customization and privacy.
    Downloads: 918 This Week
    Last Update:
    See Project
  • 3
    v2rayNG

    v2rayNG

    A V2Ray client for Android, support Xray core and v2fly core

    A V2Ray client for Android supports Xray core and v2fly core. geoip.dat and geosite.dat files are in Android/data/com.v2ray.ang/files/assets (path may differ on some Android devices). Download feature will get an enhanced version in this repo (Note it need a working proxy). The latest official domain list and ip list can be imported manually. It's possible to use third-party dat files in the same folder, like h2y. Android projects under V2rayNG folder can be compiled directly in Android Studio or using Gradle wrapper. But the v2ray core inside the aar is (probably) outdated. The aar can be compiled from the Golang project under AndroidLibV2rayLite folder. v2rayNG can run on Android Emulators. But VPN mode will not work if the system doesn't support it.
    Downloads: 870 This Week
    Last Update:
    See Project
  • 4
    Magisk

    Magisk

    Suite of open source tools for customizing Android

    Magisk is a suite of tools intended for Android customization, and supports devices higher than Android 4.2. Some elements of Android customization are root, boot scripts, SELinux patches, AVB2.0 / dm-verity / forceencrypt removals, etc. Some of the most important features of Magisk are that it provides root access to your device and it modifies read-only partitions when installing modules. Also, you can hide Magisk from root detections / system integrity checks. Magisk comes with a huge collections of tools for installation, daemons, and utilities for developers. Magisk contains MagiskSU, Magisk Modules and MagiskHide features.
    Downloads: 508 This Week
    Last Update:
    See Project
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  • 5
    Clash Meta for Android

    Clash Meta for Android

    A rule-based tunnel for Android

    Clash Meta for Android is an Android application that functions as a rule-based network tunneling and proxy management tool, enabling users to control how their internet traffic is routed through different proxy servers. Built on the Clash.Meta core, it allows advanced routing based on customizable rules, making it possible to selectively direct traffic for specific apps, domains, or regions. The application is commonly used for bypassing network restrictions, optimizing routing performance, and managing multiple proxy configurations in a unified interface. It provides a user-friendly mobile interface while maintaining powerful underlying functionality for advanced users who need granular control over network behavior. The project is actively maintained and integrates updates from the Clash.Meta kernel, ensuring compatibility with evolving proxy protocols and features. It supports various proxy types and configurations, making it highly flexible for different networking scenarios.
    Downloads: 447 This Week
    Last Update:
    See Project
  • 6
    Han1meViewer

    Han1meViewer

    Android client project for browsing and viewing videos

    Han1meViewer is an Android client project for browsing and viewing Hanime-related video content. It is written for Android 7.0 and newer and is presented by the maintainer as a learning and code-exchange project rather than an officially supported distribution channel. The repository has been deprecated, and the maintainer states that it is no longer actively maintained. Its newer unfinished development branch can be used as a basis for further work by developers who want to study or fork the code. The project is most relevant as a reference for Android app architecture, media browsing, and third-party client design. Because it deals with adult content, it is only appropriate for adults and should be used with attention to local laws, platform rules, and content rights.
    Downloads: 389 This Week
    Last Update:
    See Project
  • 7
    ShizuTools

    ShizuTools

    Contains many tools to control android system via shizuku

    ShizuTools is an Android utility suite that leverages elevated system access via Shizuku to provide controls that normally require ADB, root, or OEM-only privileges. Instead of being a single-purpose app, it bundles several focused tools under one umbrella, making it easier to apply advanced tweaks without constantly switching apps or writing commands by hand. A major use case is system app management, where the Debloater tool helps uninstall or disable preinstalled components and surfaces app information to guide safer decisions. It also includes tools that change day-to-day behavior, like enforcing picture-in-picture for apps that don’t expose it, enabling multiple audio streams at once, and giving per-app audio controls beyond what Android typically allows. For power users and automation fans, it offers shells that can execute raw ADB-style commands directly, including an intent-driven mode designed to be triggered by automation apps like Tasker or MacroDroid.
    Downloads: 351 This Week
    Last Update:
    See Project
  • 8
    InnerTune

    InnerTune

    A Material 3 YouTube Music client for Android

    A Material 3 YouTube Music client for Android.
    Downloads: 334 This Week
    Last Update:
    See Project
  • 9
    EhViewer

    EhViewer

    EhViewer overhauled with Material Design 3, Jetpack Compose and more

    EhViewer fork is dedicated to lightweight and high-performance.
    Downloads: 313 This Week
    Last Update:
    See Project
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  • 10
    Seal

    Seal

    Video/Audio Downloader for Android, based on yt-dlp

    Video/Audio Downloader for Android. Download videos and audio files from video platforms supported by yt-dlp (formerly youtube-dl). UI and logic written with pure Kotlin. Single activity, no fragments, only composable destinations.
    Downloads: 284 This Week
    Last Update:
    See Project
  • 11
    Dantotsu

    Dantotsu

    Anilist client based on Saikou

    An open-source mobile application for Anilist enthusiasts, inspired by Saikou and enhanced with Tachi/Aniyomi extensions. Dantotsu is designed for anime and manga enthusiasts who want to catch up on their favorite series. It's a user-friendly app that lets you enjoy your "favorite" anime and manga on the go. With integrated Anilist support, you can easily track your progress and stay up to date with what your friends are watching and reading. Say goodbye to the hassle of opening a browser to search for your favorite anime or manga. Dantotsu, a versatile client built upon Anilist & Tachi/Aniyomi. You can have Aniwave for anime watching and Mangadex for reading manga, which puts everything you need right at your fingertips. There's no need to leave the app; just install it, and everything you love magically appears when you're ready to explore and discover new content.
    Downloads: 283 This Week
    Last Update:
    See Project
  • 12
    Hacker Scripts

    Hacker Scripts

    Based on a true story

    Hacker Scripts is a cheeky collection of small automation scripts and language ports collected under the tagline “Based on a true story.” The repository gathers playful utilities (originally shell and Ruby scripts) that automate short, real-world tasks — for example, sending a quick “late at work” text when SSH sessions are active, firing off an automated “I’m sick / working from home” email on certain mornings, or even talking to a networked coffee machine to start brewing at precisely the right moment. The README explains the origin story and highlights several canonical scripts and provides usage notes such as required environment variables and cron examples for scheduling. Contributors have provided implementations and ports in many languages and folders (shell, Ruby, Python, Node, Perl, PowerShell, Go, Java, etc.), and the project explicitly welcomes pull requests that add additional language implementations.
    Downloads: 283 This Week
    Last Update:
    See Project
  • 13
    KernelSU

    KernelSU

    A Kernel based root solution for Android

    KernelSU is a root solution for Android devices that operates at the kernel level, providing systemless root access with enhanced control and flexibility. Unlike traditional rooting methods, it integrates directly into the Linux kernel, allowing for deeper system modifications while maintaining stability. It supports module-based customization, enabling users to extend functionality without altering core system files. KernelSU also includes a permission management system that allows fine-grained control over root access for applications. The project is designed to be compatible with modern Android versions and focuses on security and performance. It is widely used by advanced users who want powerful customization capabilities. Overall, KernelSU redefines Android rooting by embedding control directly into the kernel layer.
    Downloads: 255 This Week
    Last Update:
    See Project
  • 14
    NekoBox for Android

    NekoBox for Android

    NekoBox for Android / sing-box / universal proxy toolchain for Android

    NekoBoxForAndroid is an Android-based proxy client supporting popular protocols like V2Ray, XRay, and Shadowsocks for secure, privacy-focused internet access. Designed as a modern alternative to applications like V2rayNG, it provides a clean interface, enhanced performance, and robust configuration management for circumventing censorship and accessing restricted content.
    Downloads: 233 This Week
    Last Update:
    See Project
  • 15
    Google AI Edge Gallery

    Google AI Edge Gallery

    A gallery that showcases on-device ML/GenAI use cases

    Gallery is a curated collection of on-device machine learning examples, demo apps, and model artifacts designed to help developers experiment with and deploy ML at the edge. The project bundles runnable samples that show how to run TensorFlow Lite/Edge TPU models (and similar lightweight runtimes) on mobile and embedded platforms, demonstrating common tasks like image classification, object detection, audio recognition, and pose estimation. Each sample is intended to be both a learning aid and a practical starting point: code is organized to show model loading, pre/post-processing, performance measurement, and common optimization knobs (quantization, NNAPI/Delegate usage, and hardware accelerators). The repo also collects small, well-documented models and conversion scripts so developers can reproduce a pipeline from a full-size model down to a device-friendly artifact.
    Downloads: 174 This Week
    Last Update:
    See Project
  • 16
    WG Tunnel APK

    WG Tunnel APK

    FOSS WireGuard & AmneziaWG Android client with auto-tunneling

    WG Tunnel is a free and open-source Android VPN client designed for WireGuard and AmneziaWG connections. It extends the capabilities of the official WireGuard app by adding advanced privacy, automation, and network management features. The application supports automatic tunnel activation based on network conditions, helping users maintain secure connections without manual intervention. WG Tunnel includes tools such as split tunneling, lockdown mode, and local proxy support to provide greater control over network traffic. Built for both smartphones and Android TV devices, it delivers a flexible and user-friendly VPN experience. Its focus on privacy, censorship resistance, and customization makes it a powerful solution for secure internet access.
    Downloads: 171 This Week
    Last Update:
    See Project
  • 17
    ViMusic

    ViMusic

    An Android application for streaming music from YouTube Music

    ViMusic is an open-source Android music streaming application that plays content directly from YouTube Music without displaying ads. It focuses on a clean UI and user experience while offering features like playlists, local caching, lyrics, and dark mode. ViMusic is designed for privacy-conscious users who want a lightweight alternative to official streaming apps.
    Downloads: 137 This Week
    Last Update:
    See Project
  • 18
    AB Download Manager

    AB Download Manager

    A Download Manager that speeds up your downloads

    AB Download Manager is an Android library that provides reliable and resumable download capabilities for applications. It supports multi-threaded downloads, progress tracking, and background tasks, making it ideal for apps that require robust file transfer features. The library is built for easy integration and performance on Android devices.
    Downloads: 119 This Week
    Last Update:
    See Project
  • 19
    Rekado

    Rekado

    Payload launcher and serial number checker for Nintendo Switch

    Payload launcher is written in Kotlin for Nintendo Switch. The application doesn't require Root on your device.
    Downloads: 116 This Week
    Last Update:
    See Project
  • 20
    LTECleanerFOSS

    LTECleanerFOSS

    The last Android cleaner you'll ever need

    Android API 23+ (Marshmallow) no longer allows apps to clean other app's caches, thus the claim of cleaners clearing them is completely false. The only thing they can clean: log files, temporary files, and empty folders. LTE Cleaner is %100 free, open source, ad-free, and deletes everything it claims too.
    Downloads: 114 This Week
    Last Update:
    See Project
  • 21
    Liquid Bounce

    Liquid Bounce

    A free mixin-based injection hacked client for Minecraft

    LiquidBounce is a free and open-source mixin-based injection hacked client using the Fabric API for Minecraft. LiquidBounce is a hacked client (also known as a cheat) for Minecraft and designed to give you a significant advantage over other players. Unlike many of its competitors, LiquidBounce is completely free, open source and compatible with Fabric. LiquidBounce's JavaScript API allows you to take care of that yourself. With just a few lines of code, you can develop your own modules and share them with the community. LiquidBounce allows you to customize the HUD according to your personal needs. So if you don't like the standard design, you can easily customize it to your exact needs. We believe quality does not have to be come with a price tag and therefore offer LiquidBounce for free. No hidden costs, no premium features. Just go ahead and download our client.
    Downloads: 103 This Week
    Last Update:
    See Project
  • 22
    Mihon

    Mihon

    Free and open source manga reader for Android

    Mihon is a full-featured, open-source manga and comic reader app for Android designed to make discovering and reading manga, webtoons, and comics easy and customizable on mobile devices. Built as a community-driven successor to apps like Tachiyomi, Mihon combines a rich set of reading tools with a clean, user-friendly interface that supports local content as well as integrations with popular tracking services such as MyAnimeList, AniList, Kitsu, MangaUpdates, Shikimori, and Bangumi. It allows customization of viewing modes, reading directions, and themes so users can tailor the reading experience to their preferences, while offering category organization and library management to keep collections structured. Mihon can schedule updates for series, keeps track of chapters read or unread, and offers local backups and offline reading options so users aren’t dependent on constant internet access.
    Downloads: 102 This Week
    Last Update:
    See Project
  • 23
    CloudStream

    CloudStream

    Android app for streaming and downloading media

    Android app for streaming and downloading media.
    Downloads: 99 This Week
    Last Update:
    See Project
  • 24
    ReVanced Patches

    ReVanced Patches

    Patches for ReVanced

    Patches are small modifications to Android apps that allow you to change the behavior of or add new features, block ads, customize the appearance, and much more.
    Downloads: 94 This Week
    Last Update:
    See Project
  • 25
    Iconify

    Iconify

    Iconify lets you customize your Android 12+ device easily

    Iconify is an open-source Android customization app that provides users with deep control over the look and feel of their Android device’s interface, enabling changes to icons, colors, shapes, and even elements of the notification panel on Android 12 and above. The application focuses on letting users personalize UI components without requiring extensive technical knowledge, offering a range of theming options that can radically alter the aesthetic of app icons and system visuals for a more tailored user experience. Although the repository was archived in mid-2025, it amassed a significant community of users and contributors interested in device theming and modular customization techniques. As an archived project, Iconify’s design and codebase remain available for developers who want to build on its ideas, port features to other customization frameworks, or fork the project for new directions.
    Downloads: 90 This Week
    Last Update:
    See Project
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