Open Source Kotlin Software
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Kotlin Software
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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Create and run cloud-based virtual machines.Computing infrastructure in predefined or custom machine sizes to accelerate your cloud transformation. General purpose (E2, N1, N2, N2D) machines provide a good balance of price and performance. Compute optimized (C2) machines offer high-end vCPU performance for compute-intensive workloads. Memory optimized (M2) machines offer the highest memory and are great for in-memory databases. Accelerator optimized (A2) machines are based on the A100 GPU, for very demanding applications.
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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 But the v2ray core inside the aar is (probably) outdated.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. -
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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. -
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SimpMusic
A simple music app using YouTube Music for backend
A simple music app using YouTube Music for the backend. -
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EhViewer
EhViewer overhauled with Material Design 3, Jetpack Compose and more
EhViewer fork is dedicated to lightweight and high-performance. -
Dominate AI Search ResultsAthenaHQ is a cutting-edge platform for Generative Engine Optimization (GEO), designed to help brands optimize their visibility and performance across AI-driven search platforms like ChatGPT, Google AI, and more.
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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. -
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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. -
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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. -
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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. -
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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. -
All-in-one security tool helps you prevent ransomware and breaches.Blumira’s detection and response platform enables faster resolution of threats to help you stop ransomware attacks and prevent data breaches. We surface real threats, providing meaningful findings so you know what to prioritize. With our 3-step rapid response, you can automatically block known threats, use our playbooks for easy remediation, or contact our security team for additional guidance. Our responsive security team helps with onboarding, triage and ongoing consultations to continuously help your organization improve your security coverage.
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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. -
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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. -
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InnerTune
A Material 3 YouTube Music client for Android
A Material 3 YouTube Music client for Android. -
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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. -
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EinkBro
A small, fast web browser based on Android WebView
EinkBro is designed to fit Eink devices' needs; no unnecessary UI transitions and animations, clear B&W icons, and useful features for Eink reading experience. It's originated from FOSS Browser, which is a fully free/libre (as in freedom) Android app. -
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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. -
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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. -
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FlorisBoard
An open-source keyboard for Android which respects your privacy
FlorisBoard is a free and open-source keyboard for Android 7.0+ devices. It aims to be modern, user-friendly, and customizable while fully respecting your privacy. Currently in early beta state. -
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Neko
Unofficial MangaDex Reader for Android 7+
A Free, Open source unofficial manga reader for MangaDex. -
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CloudStream
Android app for streaming and downloading media
Android app for streaming and downloading media. -
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Droid-ify
F-Droid client with Material UI
A quick material F-Droid client. -
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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. -
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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. -
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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. -
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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. -
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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.
