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

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  • 1
    KVision

    KVision

    Object oriented web framework for Kotlin/JS

    Build modern web applications with the full power of the Kotlin language. Choose yourself the preferred way. Almost 100 ready-to-use GUI components are used as building blocks for the application UI. Sophisticated layout containers. Forms with type safe data model and built-in validation. Different text input components including rich text, typeahead, and input mask support. Buttons, checkboxes, radios and switches. Date and time picker. Spinner and range numeric input components. Advanced select box with ajax support. File upload with preview and multi-selection. Advanced charts. Reactive tables. The navigation bar, toolbar, context menu and off-canvas sidebar. Tooltips and popovers. Modals including ready to use alerts and confirm dialogs. Floating, re-sizable windows. Configurable toasts. React components and Onsen UI mobile web components.
    Downloads: 0 This Week
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  • 2
    Kakao

    Kakao

    Nice and simple DSL for Espresso in Kotlin

    At Agoda, we have more than 1000 automated tests to ensure our application's quality and give our best experience to the user. All of them are written with Espresso from Google. Even though Espresso is working really well with our test, the code readability is quite low. Let's look at some of the examples of how we write the test. As Agoda developers, we want to improve not just our codebase quality, but also our implementation of tests as well. This is why we are introducing Kakao. The library will make you enjoy writing automated tests like you are drinking hot chocolate. Nice and simple DSL for Espresso in Kotlin. If you have custom Views in your tests and you want to create your own KView, we have KBaseView. Just extend this class and implement as many additional Action/Assertion interfaces as you want. You also need to override the constructors that you need.
    Downloads: 0 This Week
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  • 3
    Koarse Grind (formerly Coarse Grind)

    Koarse Grind (formerly Coarse Grind)

    Test Automation framework intended for coarse-grained testing

    Koarse Grind has been rewritten in Kotlin (hence the 'K'). It's new home is here: https://github.com/william-hood/koarse-grind-kotlin __________________________________ Test Automation framework for Kotlin/Java with an integrated web-based user interface. It is intended for larger-grained testing of an installed & configured product, rather than unit testing.
    Downloads: 0 This Week
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  • 4
    Kobweb

    Kobweb

    A modern framework for full stack web apps in Kotlin

    Kobweb is an opinionated Kotlin framework for creating websites and web apps, built on top of Compose HTML and inspired by Next.js and Chakra UI. While Kobweb is still pre-1.0, it has been usable for a while now. It provides escape hatches to lower-level APIs, so you can accomplish anything even if Kobweb doesn't support it yet. Please consider starring the project to indicate interest, so we know we're creating something the community wants.
    Downloads: 0 This Week
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  • 5
    Kotless

    Kotless

    Kotlin Serverless Framework

    Kotless stands for Kotlin serverless framework. Its focus lies in reducing the routine of serverless deployment creation by generating it straight from the code of the application itself. So, simply speaking, Kotless gives you one magic button to deploy your Web application as a serverless application on AWS and Azure. Kotless is able to deploy existing Spring Boot or Ktor applications to AWS serverless platform. To do it, you'll need to set up a plugin and replace the existing dependency with the appropriate Kotless DSL. One of the key features of Kotless is its ability to embed into existing applications. Kotless makes super easy deployment of existing Spring and Ktor applications to AWS and Microsoft Azure serverless platforms.
    Downloads: 0 This Week
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  • 6
    KotlinDL

    KotlinDL

    High-level Deep Learning Framework written in Kotlin

    KotlinDL is a high-level Deep Learning API written in Kotlin and inspired by Keras. Under the hood, it uses TensorFlow Java API and ONNX Runtime API for Java. KotlinDL offers simple APIs for training deep learning models from scratch, importing existing Keras and ONNX models for inference, and leveraging transfer learning for tailoring existing pre-trained models to your tasks. This project aims to make Deep Learning easier for JVM and Android developers and simplify deploying deep learning models in production environments.
    Downloads: 0 This Week
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  • 7
    KotlinPoet

    KotlinPoet

    A Kotlin API for generating .kt source files

    KotlinPoet is a Kotlin and Java API for generating .kt source files. Source file generation can be useful when doing things such as annotation processing or interacting with metadata files (e.g., database schemas, protocol formats). By generating code, you eliminate the need to write boilerplate while also keeping a single source of truth for the metadata.
    Downloads: 0 This Week
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  • 8
    Ktor

    Ktor

    Framework for quickly creating connected applications in Kotlin

    Create asynchronous client and server applications. Anything from microservices to multiplatform HTTP client apps in a simple way. Open Source, free, and fun. Ktor is built from the ground up using Kotlin and Coroutines. You get to use a concise, multiplatform language, as well as the power of asynchronous programming with an intuitive imperative flow. Ktor allows you to use only what you need, and to structure your application the way you need it. In addition, you can also extend Ktor with your own plugin very easily. Brought to you by JetBrains, creators of IntelliJ IDEA, Kotlin, and more. Ktor is not only used by our customers, but also internally at JetBrains. In addition, you have top-notch tooling support.
    Downloads: 0 This Week
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  • 9
    Ktorm

    Ktorm

    A lightweight ORM framework for Kotlin with strong-typed SQL DSL

    Ktorm is a lightweight and efficient ORM Framework for Kotlin directly based on pure JDBC. It provides strong-typed and flexible SQL DSL and convenient sequence APIs to reduce our duplicated effort on database operations. All the SQL statements, of course, are generated automatically. Ktorm is open source and available under the Apache 2.0 license. Please leave a star if you've found this library helpful.
    Downloads: 0 This Week
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  • 10
    LINE Messaging API SDK for Java

    LINE Messaging API SDK for Java

    LINE Messaging API SDK for Java

    The LINE Messaging API SDK for Java makes it easy to develop bots using LINE Messaging API, and you can create a sample bot within minutes.
    Downloads: 0 This Week
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  • 11
    MVIKotlin

    MVIKotlin

    Extendable MVI framework for Kotlin Multiplatform

    Extendable MVI framework for Kotlin Multiplatform with powerful debugging tools (logging and time travel) MVI stands for Model-View-Intent. It is an architectural pattern that utilizes unidirectional data flow. The data circulates between Model and View only in one direction, from Model to View and from View to Model. MVIKotlin is a Kotlin Multiplatform framework that provides a way of (not only) writing shared code using MVI pattern. It also includes powerful debug tools like logging and time travel. MVIKotlin does not bring or enforce any particular architecture. To provide a single source of truth for State (the scope is not defined, it can be a whole app, a screen, a feature, or a part of a feature). To provide an abstraction for UI with efficient updates (however this is not obligatory, you can use whatever you want). To provide lifecycle-aware connections (binding) between inputs and outputs (again this is not obligatory in any way).
    Downloads: 0 This Week
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  • 12
    Mavericks

    Mavericks

    Mavericks, Android on Autopilot

    Mavericks is an Android MVI framework that is both easy to learn yet powerful enough for the most complex flows at Airbnb, Tonal, and other large apps. When we began creating Mavericks, our goal was to make building products easier, faster, and more fun. We believe that for Mavericks to be successful, it must be easy to learn for people new to Android development working their first apps yet powerful enough to support the most complex screens at Airbnb. Mavericks is used in hundreds of screens at Airbnb including 100% of new screens. It has also been adopted by countless other apps from small sample apps to apps with over 1 billion downloads. Mavericks is built on top of Android Jetpack and Kotlin Coroutines so it can be thought of as a complement rather than a departure from Google's standard set of libraries. We believe that for Mavericks to be successful, it must be effective for building everything from the simplest of screens to the most complex in our app.
    Downloads: 0 This Week
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  • 13
    Orbit

    Orbit

    Virtual actor framework for building distributed systems

    Orbit is a framework to write distributed systems using virtual actors on the JVM. A virtual actor is an object that interacts with the world using asynchronous messages. At any time an actor may be active or inactive. Usually the state of an inactive actor will reside in the database. When a message is sent to an inactive actor it will be activated somewhere in the pool of backend servers. During the activation process the actor’s state is read from the database.
    Downloads: 0 This Week
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  • 14
    Result

    Result

    The modelling for success/failure of operations in Kotlin and KMM

    This is a tiny framework for modeling the success/failure of operations in Kotlin. Result is to provide a higher abstraction of operation that can be ended with a result of either success or failure.
    Downloads: 0 This Week
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  • 15
    Ruler

    Ruler

    Gradle plugin which helps you analyze the size of your Android apps

    App size is an important metric which directly correlates with business metrics like install conversion rate. Measuring app size is straightforward, but knowing what contributes to it is not. Especially in bigger projects with hundreds or thousands of modules and third-party dependencies. Ruler provides a convenient way to find out how much each module and dependency contributes to the total size of your app by running a single Gradle task. First you need to add the Ruler Gradle plugin to the buildscript classpath in your top-level build.gradle file. When using app bundles, Google Play will generate optimized APKs for each device. This means that the size of an APK depends on the specifications of the device that's downloading it. You can configure which device specifications should be used for the analysis in the build.gradle of your application module.
    Downloads: 0 This Week
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  • 16
    Simple Robot

    Simple Robot

    A Bot-style event scheduling framework, asynchronous

    Simple Robot (v4) is based onKotlin Co-process ofKotlin multiplatform Bot styleHigh-performance asynchronous event scheduling framework (hereinafter referred to as simbot), Asynchronous and efficient, Java friendly. simbot provides a unified asynchronous API and easy-to-use style design that can assist you in writing more quickly and efficiently but style event scheduling application. It is mainly used to connect various types of Bot application platforms/frameworks and provide part of the component library to achieve.
    Downloads: 0 This Week
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  • 17
    Snippetory

    Snippetory

    Java templating solution with passive templates.

    Snippetory is a platform for java developers dealing with any text generation. The abstraction layer helps to keep the issues of the 'view' in the view, while all logic is implemented in java. Editing, debugging and testing, all with the tools one is already used to. The separation of template keeps the template simple, the logic compact, and easy to navigate, and offers completely new re-usage scenarios. Sourceforge code hosting is abandoned. Primary site is now https://gitlab.com/jproggy/Snippetory
    Downloads: 0 This Week
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  • 18
    Solidity plugin for IntelliJ

    Solidity plugin for IntelliJ

    Solidity plugin for IntelliJ

    Solidity plugin for IntelliJ. You can support the development by sponsoring the plugin on Github. Supporting the plugin with crypto through the Gitcoin grant. Please attach the screenshot for every issue if possible. It will make the issue much clearer and easier to understand.
    Downloads: 0 This Week
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  • 19
    Spek

    Spek

    A specification framework for Kotlin

    Spek 2.x is a complete rewrite of Spek with Kotlin multiplatform support in mind. The DSL is also reworked into two distinct styles: specification and gherkin. A dedicated migration section and a list of breaking changes are provided.
    Downloads: 0 This Week
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  • 20
    Spring Reactive Sample

    Spring Reactive Sample

    Spring 5 Reactive playground

    This is a sandbox project for demonstrating Reactive Streams support in the Spring framework and Spring ecosystem. I've also maintained a series of repos related to ReativeStreams and the latest Spring 5.
    Downloads: 0 This Week
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  • 21
    TornadoFX

    TornadoFX

    Lightweight JavaFX Framework for Kotlin

    Oracle is intending to decouple JavaFX from the JDK. We will wait until the decoupled JavaFX is available and stable before upgrading TornadoFX to support it. As of now there is little value and significant effort involved in updating to JDK 9/10, while there will be an enormous value in updating to the decoupled version.
    Downloads: 0 This Week
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  • 22
    TransformationLayout

    TransformationLayout

    Transform between two Views, Activities, and Fragments

    Transform views, activity, and fragments into other components with container transform animations.
    Downloads: 0 This Week
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  • 23
    Workflow

    Workflow

    A Swift and Kotlin library for making composable state machines

    Workflow is an application framework that provides architectural primitives. A corresponding testing framework that facilitates simple-to-write unit tests for all application business logic and helps ensure correctness. Corresponding UI frameworks that bind Rendering data classes for “views” (including event callbacks) to Mobile UI frameworks for Android and iOS. Optimized for composability and scalability of features and screens. A library that supports writing business logic and complex UI navigation logic as state machines, thereby enabling confident reasoning about the state and validation of correctness. A unidirectional data flow library that uses immutable data within each Workflow. Data flows in a single direction from the source to the UI, and events in a single direction from the UI to the business logic. Each logical component area is separated into a Workflow with a finite set of states and the logic to transition between them.
    Downloads: 0 This Week
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  • 24
    YAVI

    YAVI

    Yet Another Validation for Java

    YAVI (pronounced jɑ-vάɪ) is a lambda-based type safe validation for Java.
    Downloads: 0 This Week
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  • 25
    deep-clean

    deep-clean

    When Gradle or the IDE let you down, just --nuke all them caches

    A Kotlin script that nukes all build caches from Gradle/Android projects. Useful when Gradle or the IDE let you down. The script has been tested on macOS, but it is completely untested on Linux and Windows. KScript may not work at all on Windows! For this script to work, you need to have kotlin, script, and maven on your PATH. If you don't have all three commands on your PATH, then read on to the next section to install them. To make the script run, we'll first need to install all the required dependencies. All dependencies are available on SDKMan! (Windows, Linux, macOS). Note that KScript support for Windows is not officially available yet.
    Downloads: 0 This Week
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