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.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
    Start Free
  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 1
    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: 534 This Week
    Last Update:
    See Project
  • 2
    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 But the v2ray core inside the aar is (probably) outdated.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: 404 This Week
    Last Update:
    See Project
  • 3
    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: 288 This Week
    Last Update:
    See Project
  • 4
    Tachiyomi

    Tachiyomi

    Free and open source manga reader for Android

    Tachiyomi is a free and open source manga reader for Android 6.0 and above. Online and offline reading from hundred of different sources. Automatically keep track of your manga with MyAnimeList, AniList, Kitsu, Shikimori, and Bangumi. A configurable reader with multiple reading modes, custom color filters, and other settings. A configurable reader with multiple viewers, reading directions and other settings. Tracker support, MyAnimeList, AniList, Kitsu, Shikimori, and Bangumi. Create backups locally to read offline or to your desired cloud service.
    Downloads: 217 This Week
    Last Update:
    See Project
  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 5
    EhViewer

    EhViewer

    EhViewer overhauled with Material Design 3, Jetpack Compose and more

    EhViewer fork is dedicated to lightweight and high-performance.
    Downloads: 202 This Week
    Last Update:
    See Project
  • 6
    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: 115 This Week
    Last Update:
    See Project
  • 7
    SimpMusic

    SimpMusic

    A simple music app using YouTube Music for backend

    A simple music app using YouTube Music for the backend.
    Downloads: 114 This Week
    Last Update:
    See Project
  • 8
    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: 60 This Week
    Last Update:
    See Project
  • 9
    Auxio

    Auxio

    A simple, rational music player for Android

    Auxio is a local music player with a fast, reliable UI/UX without the many useless features present in other music players. Built off of modern media playback libraries, Auxio has superior library support and listening quality compared to other apps that use outdated android functionality. In short, It plays music. The default branch is the development version of the repository. For a stable version, see the master branch.
    Downloads: 54 This Week
    Last Update:
    See Project
  • Photo and Video Editing APIs and SDKs Icon
    Photo and Video Editing APIs and SDKs

    Trusted by 150 million+ creators and businesses globally

    Unlock Picsart's full editing suite by embedding our Editor SDK directly into your platform. Offer your users the power of a full design suite without leaving your site.
    Learn More
  • 10
    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: 52 This Week
    Last Update:
    See Project
  • 11
    Suwayomi-Server

    Suwayomi-Server

    A rewrite of Tachiyomi for the Desktop

    A free and open source manga reader server that runs extensions built for Tachiyomi. Suwayomi is an independent Tachiyomi compatible software and is not a Fork of Tachiyomi. Suwayomi-Server is as multi-platform as you can get. Any platform that runs java and/or has a modern browser can run it. This includes Windows, Linux, macOS, chrome OS, etc. Follow Downloading and Running the app for installation instructions.
    Downloads: 50 This Week
    Last Update:
    See Project
  • 12
    EtchDroid

    EtchDroid

    An application to write OS images to USB drives, on Android

    EtchDroid is an open-source application that writes disk images to USB drives. Use it to make a bootable operating system USB drive when your laptop is dead.
    Downloads: 47 This Week
    Last Update:
    See Project
  • 13
    CloudStream

    CloudStream

    Android app for streaming and downloading media

    Android app for streaming and downloading media.
    Downloads: 45 This Week
    Last Update:
    See Project
  • 14
    Mtk Easy Su

    Mtk Easy Su

    Get bootless root access with few clicks.

    This app set up bootless super user access, with Magisk and Mtk-su, on MediaTek Android devices. To facilitate those wishing to use the security breach Mtk-su by Diplomatic. If you are a more advanced user. I recommend using the mtk-su tool from the terminal, you will have more possibilities and control over the process.
    Downloads: 44 This Week
    Last Update:
    See Project
  • 15
    Spowlo

    Spowlo

    A Spotify songs downloader for Android made with Jetpack Compose

    A Spotify songs downloader powered by spotDL made with Jetpack Compose and Material You.
    Downloads: 43 This Week
    Last Update:
    See Project
  • 16
    JByteMod-Beta

    JByteMod-Beta

    Java bytecode editor

    JByteMod is a multifunctional bytecode editor with syntax highlighting and live decompiling and method graphing.
    Downloads: 42 This Week
    Last Update:
    See Project
  • 17
    Shadowsocks for Android

    Shadowsocks for Android

    A shadowsocks client for Android

    Shadowsocks for Android is the Android client for the widely-used, high-performance encryption protocol project Shadowsocks. It is a secure socks5 proxy for Android that is designed to protect your internet traffic. Shadowsocks for Android allows you to surf the internet privately and securely at all times through your Android device. It features bleeding-edge techniques with Asynchronous I/O and Event-driven programming. It is completely free and open-source and is available for other platforms as well.
    Downloads: 40 This Week
    Last Update:
    See Project
  • 18
    YTDLnis

    YTDLnis

    Android Video/Audio Downloader app using yt-dlp

    YTDLnis is a free and open source video/audio downloader using yt-dlp for Android 6.0 and above.
    Downloads: 40 This Week
    Last Update:
    See Project
  • 19
    Animeko

    Animeko

    100% Kotlin/Compose Multiplatform

    Animeko is an open-source anime streaming app for Android, offering a modern and community-driven alternative for watching anime. It aggregates content from various public sources and supports multiple features to enhance the viewing experience, including subtitles, episode tracking, and source customization.
    Downloads: 39 This Week
    Last Update:
    See Project
  • 20
    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: 36 This Week
    Last Update:
    See Project
  • 21
    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: 35 This Week
    Last Update:
    See Project
  • 22
    SimpleX

    SimpleX

    The first messaging platform operating without user identifiers

    Other apps have user IDs: Signal, Matrix, Session, Briar, Jami, Cwtch, etc. SimpleX does not, not even random numbers. This radically improves your privacy. The video shows how you connect to your friend via their 1-time QR-code, in person or via a video link. You can also connect by sharing an invitation link. Temporary anonymous pairwise identifiers SimpleX uses temporary anonymous pairwise addresses and credentials for each user contact or group member. It allows to deliver messages without user profile identifiers, providing better meta-data privacy than alternatives. Many communication platforms are vulnerable to MITM attacks by servers or network providers. To prevent it SimpleX apps pass one-time keys out-of-band when you share an address as a link or a QR code. Double-ratchet protocol. OTR messaging with perfect forward secrecy and break-in recovery. NaCL cryptobox in each queue to prevent traffic correlation between message queues if TLS is compromised.
    Downloads: 35 This Week
    Last Update:
    See Project
  • 23
    USB Gadget Tool

    USB Gadget Tool

    Convert your Android phone to any USB device you like

    Convert your Android phone to any USB device you like. USB Gadget Tool allows you to create and activate USB device roles, like a mouse or a keyboard. Connected USB hosts (e.g. a normal computer) will then identify your Android device only under that role. It can also be used to deactivate the standard USB Gadget (including mtp, adb, etc.), e.g. for security reasons.
    Downloads: 35 This Week
    Last Update:
    See Project
  • 24
    Kotlin

    Kotlin

    The Kotlin programming language

    It is an open-source, statically typed programming language supported and developed by JetBrains and open-source contributors. Support for multiplatform programming is one of Kotlin’s key benefits. It reduces time spent writing and maintaining the same code for different platforms while retaining the flexibility and benefits of native programming. Kotlin plugin is intended to work with several recent versions of IntelliJ IDEA and Android Studio. Each platform is allowed to have a different set of features and might provide a slightly different API. Instead of using several parallel Git branches, the project stores everything in a single branch, but files may have counterparts with version extensions (*.as32, *.172, *.181). The primary file is expected to be replaced with its counterpart when targeting a non-default platform.
    Downloads: 33 This Week
    Last Update:
    See Project
  • 25
    APKUpdater

    APKUpdater

    Simplify the process of finding updates for your installed apps

    APKUpdater is an open source tool that simplifies the process of finding updates for your installed apps. It provides similar functionality to an app store, but instead of depending on a single source, it aggregates the results from APKMirror, Aptoide, F-Droid and Google Play. Schedule background update checks and receive a notification when updates are found. Supports Android 4.0.3 to Android 10. Supports Android TV. Material Design 2 with multiple theme support. Direct install of updates for sources that support it. Root install of updates. Languages: English, Spanish, Chinese, Turkish, Arabic, French, Indonesian, Italian, Brazilian Portuguese. App ignore list. Filter updates by architecture. Filter experimental apps. Filter apps by API level. Exclude apps installed by an App Store.
    Downloads: 31 This Week
    Last Update:
    See Project
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