The Kotlin Programming Language.
Alternatives To Kotlin
Project NameStarsDownloadsRepos Using ThisPackages Using ThisMost Recent CommitTotal ReleasesLatest ReleaseOpen IssuesLicenseLanguage
Kotlin44,8661,5233,60016 hours ago77September 07, 2022154Kotlin
The Kotlin Programming Language.
a day ago8
收集整理Android开发所需的Android SDK、开发中用到的工具、Android开发教程、Android设计规范,免费的设计素材等。
Detekt5,4562819 hours ago30August 30, 2021168apache-2.0Kotlin
Static code analysis for Kotlin
Gradle Retrolambda5,3886834 years ago40April 21, 201974apache-2.0Java
A gradle plugin for getting java lambda support in java 6, 7 and android
Packer Ng Plugin4,796321a year ago12March 03, 201721apache-2.0Java
下一代Android打包工具(对Gradle 7.x的支持,欢迎提PR)
Gradle Versions Plugin3,61711817 days ago20May 31, 201780apache-2.0Kotlin
Gradle plugin to discover dependency updates
2 years ago145apache-2.0Groovy
A Android gradle plugin that effects AspectJ on Android project and can hook methods in Kotlin, aar and jar file.
11 days ago232apache-2.0Groovy
Gradle plugin to create fat/uber JARs, apply file transforms, and relocate packages for applications and libraries. Gradle version of Maven's Shade plugin.
Aboutlibraries3,24413 days ago87August 19, 202214apache-2.0Kotlin
AboutLibraries automatically collects all dependencies and licenses of any gradle project (Kotlin MultiPlatform), and provides easy to integrate UI components for Android and Compose-jb environments
Dexcount Gradle Plugin3,015
2 months ago45January 25, 20222apache-2.0Java
A Gradle plugin to report the number of method references in your APK on every build.
Alternatives To Kotlin
Select To Compare

Alternative Project Comparisons

official project TeamCity (simple build status) Maven Central GitHub license Revved up by Gradle Enterprise

Kotlin Programming Language

Welcome to Kotlin!
It is an open-source, statically typed programming language supported and developed by JetBrains and open-source contributors.

Some handy links:

Kotlin Multiplatform capabilities

Support for multiplatform programming is one of Kotlins key benefits. It reduces time spent writing and maintaining the same code for different platforms while retaining the flexibility and benefits of native programming.

Editing Kotlin

Build environment requirements

This repository is using Gradle toolchains feature to select and auto-provision required JDKs from AdoptOpenJdk project.

Unfortunately AdoptOpenJdk project does not provide required JDK 1.6 and 1.7 images, so you could either download them manually and provide path to installation via JDK_1_6 and JDK_1_7 environment variables or use following SDK managers:

Alternatively, it is still possible to only provide required JDKs via environment variables (see gradle.properties for supported variable names). To ensure Gradle uses only JDKs from environmental variables - disable Gradle toolchain auto-detection by passing -Porg.gradle.java.installations.auto-detect=false option (or put it into $GRADLE_USER_HOME/gradle.properties).

For local development, if you're not working on the standard library, it's OK to avoid installing JDK 1.6 and JDK 1.7. Add kotlin.build.isObsoleteJdkOverrideEnabled=true to the local.properties file, so build will only use JDK 1.8+. Note, that in this case, build will have Gradle remote build cache misses for some tasks.

Note: The JDK 6 for MacOS is not available on Oracle's site. You can install it by

$ brew tap homebrew/cask-versions
$ brew install --cask java6

On Windows you might need to add long paths setting to the repo:

git config core.longpaths true 


The project is built with Gradle. Run Gradle to build the project and to run the tests using the following command on Unix/macOS:

./gradlew <tasks-and-options>

or the following command on Windows:

gradlew <tasks-and-options>

On the first project configuration gradle will download and setup the dependencies on

  • intellij-core is a part of command line compiler and contains only necessary APIs.
  • idea-full is a full blown IntelliJ IDEA Community Edition to be used in the plugin module.

These dependencies are quite large, so depending on the quality of your internet connection you might face timeouts getting them. In this case, you can increase timeout by specifying the following command line parameters on the first run:

./gradlew -Dhttp.socketTimeout=60000 -Dhttp.connectionTimeout=60000

Important gradle tasks

  • clean - clean build results
  • dist - assembles the compiler distribution into dist/kotlinc/ folder
  • install - build and install all public artifacts into local maven repository
  • coreLibsTest - build and run stdlib, reflect and kotlin-test tests
  • gradlePluginTest - build and run gradle plugin tests
  • compilerTest - build and run all compiler tests

To reproduce TeamCity build use -Pteamcity=true flag. Local builds don't run proguard and have jar compression disabled by default.

OPTIONAL: Some artifacts, mainly Maven plugin ones, are built separately with Maven. Refer to libraries/ReadMe.md for details.

To build Kotlin/Native, see kotlin-native/README.md.

Working with the project in IntelliJ IDEA

It is recommended to use the latest released version of Intellij IDEA (Community or Ultimate Edition). You can download IntelliJ IDEA here.

After cloning the project, import the project in IntelliJ by choosing the project directory in the Open project dialog.

For handy work with compiler tests it's recommended to use Kotlin Compiler Test Helper

Dependency verification

We have a dependencies verification feature enabled in the repository for all Gradle builds. Gradle will check hashes (md5 and sha256) of used dependencies and will fail builds with Dependency verification failed errors when local artifacts are absent or have different hashes listed in the verification-metadata.xml file.

It's expected that verification-metadata.xml should only be updated with the commits that modify the build. There are some tips how to perform such updates:

  • Use auto-generation for getting an initial list of new hashes (verify updates relate to you changes).
./gradlew -i --write-verification-metadata sha256,md5 -Pkotlin.native.enabled=true help

(any other task may be used instead of help)

  • Consider removing old versions from the file if you are updating dependencies.
  • Leave meaningful origin attribute (instead of Generated by Gradle) if you did some manual verification of the artifact.
  • Always do manual verification if several hashes are needed, and a new also-trust tag has to be added.
  • If youre adding a dependency with OS mentioning in an artifact name (darwin, mac, osx, linux, windows), remember to add counterparts for other platforms.

Using -dev and -SNAPSHOT versions

We publish -dev and -SNAPSHOT versions frequently.

For -dev versions you can use the list of available versions and include this maven repository:


For -SNAPSHOT versions that are updated daily, you can use the list of available versions and include this maven repository:



Kotlin is distributed under the terms of the Apache License (Version 2.0). See license folder for details.


Please be sure to review Kotlin's contributing guidelines to learn how to help the project.

Popular Plugin Projects
Popular Gradle Projects
Popular Libraries Categories
Related Searches

Get A Weekly Email With Trending Projects For These Categories
No Spam. Unsubscribe easily at any time.
Programming Language
Gradle Plugin
Multi Platform
Kotlin Library
Intellij Plugin
Maven Plugin