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February 28, 2025

Apply for Google Summer of Code 2025 and Contribute to the Kotlin Ecosystem

The Kotlin Foundation is once again participating in Google Summer of Code (GSoC), offering contributors an opportunity to work on open-source projects that shape the Kotlin ecosystem. This year, the program is expanding to include even more projects from Kotlin Foundation member companies like JetBrains, Google, Uber, and Gradle, providing contributors with mentorship from some […]

February 17, 2025

OpenAI vs. DeepSeek: Which AI Understands Kotlin Better?

AI models are evolving fast, and DeepSeek-R1 is making waves as a serious competitor to OpenAI. But how well do these models understand Kotlin? Can they generate reliable code, explain tricky concepts, and help with debugging? JetBrains Research tested the latest AI models, including DeepSeek-R1, OpenAI o1, and OpenAI o3-mini, using KotlinHumanEval and a new […]

February 13, 2025

Ktor 3.1.0 Release

Ktor 3.1.0 is here! This is the first minor release of the year, bringing exciting new features, performance improvements, and bug fixes. This release includes improvements to server-sent events (SSE), documentation enhancements, WebAssembly (Wasm) support, dependency injection design updates, and some initial steps toward gRPC integration. 🚀 Get started with Ktor 3.1.0 now! Ready to […]

February 11, 2025

Kotlin Multiplatform Tooling – Shifting Gears

A couple of years ago, we initiated the idea of creating a Kotlin Multiplatform IDE to help facilitate the development of KMP applications. We embarked on this venture, building on the Fleet platform, with the intention of releasing it as a standalone IDE. During this time, we have received feedback from our customers, specifically those […]

Kotlin blog

Why Kotlin?

fun main() {
    val name = "stranger"        // Declare your first variable
    println("Hi, $name!")        // ...and use it!
    print("Current count:")
    for (i in 0..10) {           // Loop over a range from 0 to 10
        print(" $i")
    }
}

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fun main() {    val name = "stranger"        // Declare your first variable    println("Hi, $name!")        // ...and use it!    print("Current count:")    for (i in 0..10) {           // Loop over a range from 0 to 10        print(" $i")    }}

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Kotlin in action

McDonald's leverages Kotlin Multiplatform (KMP) for their global mobile app, enabling them to build a codebase that can be shared across platforms, removing the need for codebase redundancies.Kotlin Multiplatform

AWS opted for Kotlin over Java for Amazon Quantum Ledger Database (QLDB) thanks to its expressiveness and structured concurrency. They rewrote QLDB in Kotlin, enhancing the user experience, benefiting from its development workflow, and adopting it fully for server-side development.Server-side

Philips utilizes Kotlin Multiplatform in its HealthSuite digital platform mobile SDK. With KMP, they accelerated the implementation of new features and fostered increased collaboration between Android and iOS developers.Kotlin Multiplatform

Adobe Experience Platform chose Kotlin for server-side development because of its concise syntax, async capabilities, and interoperability with Java. This shift boosted productivity and improved the developer experience, replacing Java for real-time services.Server-side

By sharing over 80% of logic across iOS and Android, Forbes now rolls out new features simultaneously on both platforms, keeping the flexibility to withhold or customize features based on the specific platform.Kotlin Multiplatform

Atlassian adopted Kotlin for the Jira Software cloud, leveraging its Java compatibility for seamless integration and minimizing migration challenges. Kotlin's ease of use improved developer productivity and boosted team satisfaction and efficiency.Server-side

Share code on your terms and for different platforms

Simplify the development of cross-platform projects with Kotlin Multiplatform. It reduces time spent writing and maintaining the same code for different platforms while retaining the flexibility and benefits of native programming. Kotlin applications will work on different operating systems, such as iOS, Android, macOS, Windows, Linux, watchOS, and others.

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Big, friendly and helpful community

Kotlin has great support and many contributors in its fast-growing global community. Enjoy the benefits of a rich ecosystem with a wide range of community libraries. Help is never far away — consult extensive community resources or ask the Kotlin team directly.

Kotlin Foundation

Actively supports community efforts in developing the Kotlin ecosystem.

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