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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.

  • Simple, Secure Domain Registration Icon
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    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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  • 1
    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: 43 This Week
    Last Update:
    See Project
  • 2
    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: 35 This Week
    Last Update:
    See Project
  • 3
    EinkBro

    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.
    Downloads: 34 This Week
    Last Update:
    See Project
  • 4
    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: 33 This Week
    Last Update:
    See Project
  • Keep company data safe with Chrome Enterprise Icon
    Keep company data safe with Chrome Enterprise

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  • 5
    CloudStream

    CloudStream

    Android app for streaming and downloading media

    Android app for streaming and downloading media.
    Downloads: 31 This Week
    Last Update:
    See Project
  • 6
    TachiyomiSY

    TachiyomiSY

    Free and open source manga reader for Android

    Tachiyomi is a free and open source manga reader for Android 6.0 and above. This version of Tachiyomi, TachiyomiSY was based off TachiyomiAZ. This version is meant to push forward in the ways of usability and features. TachiyomiSY tries to push forward where it can, but staying in a place where it can easily grab updates and features from the main app, it tries to make new features, or take features from other forks like J2K and Neko.
    Downloads: 31 This Week
    Last Update:
    See Project
  • 7
    Unciv

    Unciv

    Open-source Android/Desktop remake of Civ V

    Unciv is an open-source reimplementation of the game Civilization V in Java using LibGDX. It focuses on replicating the core gameplay mechanics in a lightweight, mobile- and desktop-friendly format, supporting both single-player and multiplayer modes. Unciv uses a minimalist art style and text-based UI to deliver a fast, turn-based strategy experience.
    Downloads: 31 This Week
    Last Update:
    See Project
  • 8
    JByteMod-Beta

    JByteMod-Beta

    Java bytecode editor

    JByteMod is a multifunctional bytecode editor with syntax highlighting and live decompiling and method graphing.
    Downloads: 28 This Week
    Last Update:
    See Project
  • 9
    SuperImage

    SuperImage

    Sharpen your low-resolution pictures with the power of AI upscaling

    Sharpen your low-resolution pictures with the power of AI upscaling. SuperImage is a neural network-based image upscaling build with the MNN deep learning framework and the Real-ESRGAN algorithm. By leveraging the power of your device's GPU, SuperImage is able to upscale and restore the details of your images without uploading them to the internet, keeping your data secure. SuperImage is a neural network-based image upscaling application for Android built with the MNN deep learning framework and Real-ESRGAN. The input image is processed in tiles on the device GPU, using a pre-trained Real-ESRGAN model. The tiles are then merged into the final high-resolution image. This application requires Vulkan or OpenCL support and Android 7 or above.
    Downloads: 28 This Week
    Last Update:
    See Project
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    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
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  • 10
    Animity

    Animity

    Use the Android app to watch anime on your phone without ads

    An Android app to watch anime on your phone without ads. Animity is an anime streaming app that provides high-quality streaming of your favorite anime shows. It's designed to be easy to use, so you can quickly find the anime you want to watch and start streaming. With Animity, you can also sync your account with Anilist, so you can keep track of your favorite shows and manage your anime watchlist. Whether you're a die-hard anime fan or a casual viewer, Animity has something for everyone. Animity parses website data and filter required info, thus It removes the ads for seamless experience.
    Downloads: 27 This Week
    Last Update:
    See Project
  • 11
    Shizuku

    Shizuku

    Using system APIs directly with adb/root privileges from normal apps

    Shizuku is a powerful Android tool that allows apps to use system-level APIs with ADB or root privileges, without requiring the apps themselves to be rooted. It acts as a service layer that proxies system API access, enabling developers and advanced users to build powerful system utilities or tweak tools while preserving user security and sandboxing.
    Downloads: 27 This Week
    Last Update:
    See Project
  • 12
    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: 26 This Week
    Last Update:
    See Project
  • 13
    Kvaesitso

    Kvaesitso

    A search-focused Android launcher

    Kvaesitso is a search-focused, free and open source launcher for Android. The preferred way of installation is using the F-Droid application. That way you will always be notified about updates. Kvaesitso is available in the official F-Droid repository, but all features depending on non-foss external APIs were removed. For feature-complete builds, you can add MM20's repository.
    Downloads: 25 This Week
    Last Update:
    See Project
  • 14
    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: 25 This Week
    Last Update:
    See Project
  • 15
    Smart AutoClicker

    Smart AutoClicker

    An open-source auto clicker on images for Android

    Smart AutoClicker is an Android application allowing to automate repetitive task by clicking automatically for you on the screen. Unlike the regular auto clicker application, the clicks aren't based on timers to execute the clicks. Instead, it allows you to capture an image from a part of your screen and execute the click once this image is detected again.
    Downloads: 25 This Week
    Last Update:
    See Project
  • 16
    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: 23 This Week
    Last Update:
    See Project
  • 17
    fanqiang

    fanqiang

    Over the Wall - Science Online

    Over the wall-Scientific Internet, over-the-wall tool, over-the-wall tutorial project library.
    Downloads: 23 This Week
    Last Update:
    See Project
  • 18
    Lemuroid

    Lemuroid

    All in one emulator on Android!

    Lemuroid is an open-source emulator based on Libretro. It's designed to work on a wide range of devices, from phones to TVs, and to provide the best user experience on Android. It's completely free and without ads. Keep in mind not every device can emulate every console. A very powerful one is required for more recent systems such as PSP and DS and 3DS. This application does not contain any games. You need to provide your own legally owned ROM files. It originated from a rib of Retrograde, but graduated to a standalone project integrating LibretroDroid.
    Downloads: 22 This Week
    Last Update:
    See Project
  • 19
    Android KeePassDX

    Android KeePassDX

    Lightweight vault and password manager for Android

    Lightweight vault and password manager for Android, KeePassDX allows editing encrypted data in a single file in KeePass format and filling in the forms in a secure way. Keep your password safe in a secure place, KeePassDX stores your database in a single encrypted file and can be copied and moved wherever you want. KeePassDX is compatible with other KeePass products, the format is standardized and allows for increased interoperability. KeePassDX is created by the community and the code is completely open, it allows better security and better management of your needs.
    Downloads: 21 This Week
    Last Update:
    See Project
  • 20
    Fossify Gallery

    Fossify Gallery

    Browse memories without interruptions with photo and video galleries

    Unleash memories, not personal data. Fossify Gallery is the ultimate photo and video app that's as powerful as it is private. No ads, no unnecessary permissions – just a seamless experience tailored for you. Enhance your photos with our basic yet powerful photo editor. Crop, resize, rotate, flip, draw, and apply stunning filters, all without compromising your privacy. Take control of your memories like never before. Your privacy matters. Ditch the data-hungry giants. Fossify Gallery puts you in control. Strip away EXIF metadata like GPS coordinates and camera details, keeping your memories yours, and yours alone. Lock down your memories with pin, pattern, or fingerprint protection. Secure specific photos, videos, or the entire app – you decide who gets access. Peace of mind, is guaranteed.
    Downloads: 21 This Week
    Last Update:
    See Project
  • 21
    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: 20 This Week
    Last Update:
    See Project
  • 22
    Octavi-OS

    Octavi-OS

    fast mirror online soon

    An AOSP based custom rom with new look and feel and massive customisations , contains everything you need .
    Downloads: 103 This Week
    Last Update:
    See Project
  • 23
    Image Toolbox

    Image Toolbox

    Image Toolbox is an powerful picture editor, which can crop

    Image Toolbox is a powerful picture editor, which can crop, apply filters, add some drawings, erase background, edit EXIF, or even create a PDF file.
    Downloads: 17 This Week
    Last Update:
    See Project
  • 24
    Aniyomi

    Aniyomi

    An app for manga and anime

    Aniyomi is an anime and manga streaming app for Android based on Tachiyomi, extending its functionality to include anime streaming alongside manga reading. It supports various sources through extensions, download capabilities, episode tracking via services like MyAnimeList and AniList, and a rich set of customization options.
    Downloads: 16 This Week
    Last Update:
    See Project
  • 25
    Element Android

    Element Android

    A glossy Matrix collaboration client for Android

    Element Android is a glossy Matrix collaboration client for Android, based on a new Android SDK fully written in Kotlin. A total rewrite of Riot-Android, Element is an all-in-one secure chat app made possible through the open global Matrix network. It is a messenger that allows users to talk to anyone regardless of their app, while providing unparalleled privacy and security. It protects conversations from data-mining and ads with proper end-to-end encryption, so you can feel totally secure. Element is used by millions all over the world for their business, organizations, and even for personal and home use. It is part of the Matrix ecosystem, which is an open network for secure, decentralised communication governed by The Matrix.org Foundation.
    Downloads: 16 This Week
    Last Update:
    See Project
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