📢 Do you use Kotlin for backend development? We’re launching the Kotlin for Server-Side Content Creators campaign to recognize good content and share it with the Kotlin community. Whether it’s a blog post, video, or project, we want to promote your work. What to share? ✅ Your journey exploring Kotlin for backend development ✅ Migration stories from Java backends to Kotlin ✅ Tutorials on building with Ktor or Spring Boot in Kotlin ✅ Practical tips for Kotlin server-side development 👉 Learn more: kotl.in/2ygmbv

ktor new🎉 Ktor 3.1.0 is here! This release brings many updates, including: ✅ SSE improvements ✅ A new CLI project configurator ✅ HttpClient multipart ✅ New feedback collection tools Read the blog post and start building your next project today!

K🤖 Curious about how AI models handle Kotlin? We put DeepSeek-R1, several OpenAI models, and others to the test using Kotlin-specific benchmarks. Here’s what we discovered: ✅ How well different models respond to Kotlin-related questions ✅ How the models compare in accuracy and reasoning ✅ Where they succeed – and where they struggle 👉 Read the full analysis: https://kotl.in/ai-models

K The Kotlin Foundation Annual Report 2024 is here! 🔹 2.5M+ developers coding in Kotlin 🔹 $182K+ invested in ecosystem growth 🔹 Student contests, grants and open-source contributions As founding members of the Kotlin Foundation and creators of the language, JetBrains is proud to be part of the Kotlin community and see how the technology is growing. For an overview of last year's milestones and upcoming plans for the ecosystem, see the 🔗 Foundation's 2024 Annual Report.

📣 Calling all students and open source beginners! Great news: The Kotlin Foundation joins Google Summer of Code 2025 as a mentor organization! If you are a student or new to open source and eager to contribute to Kotlin-related projects, collaborate with experienced mentors, and enhance your skills, this is your chance to learn and grow. Explore project ideas and participation guidelines: • Read the blog post about GSoC • Join us in the #C04N1T126DU channel for updates and to connect with mentors

K In case you missed it, we’ve updated our Kotlin roadmap! Head over to our Kotlin roadmap page to explore what we’ve accomplished since September 2024, our key objectives, and future plans. 🔗 Kotlin roadmap 🔗 🔥🔥 During KotlinConf 2025, we’re going to share some interesting updates in these areas!

🎉 The first Kotlin for server-side content roundup is here! From Java-to-Kotlin conversions to Ktor tutorials and end-to-end testing, here’s what the community has been working on: 📖 Java to Kotlin migration guide 🎥 Mastering Ktor backend development 📖 Secure Firebase authentication in Ktor 💻 kotlin-wot – A Web of Things framework in Kotlin 👉 Read more: https://kotl.in/y3g829

K Kotlin 2.1.20 is here! K This release brings powerful new features and improvements: ✨ K2 support for kapt and Lombok plugins 🔗 Common atomic types and improved UUIDs in stdlib ⏱️ Native time-tracking API ⚡ New inlining optimizations in Kotlin/Native 🛠️ Better debugging for Kotlin/Wasm 📜 A new DSL to replace Gradle’s Application plugin 📚 Big improvements to Kotlin documentation Learn more: https://kotl.in/2-1-2

amper intensifies*Amper 0.6.0 is out!* This release improves how you set up and manage projects from both the IDE and CLI. Here’s what’s new: ✔️ Refactor and inline templates with new IDE shortcuts 🥸 Aliases for easier config navigation 🆕 A new interactive amper init 🪄 Tab completion support 🪵 Cleaner logs with color coding 📦 Updated dependency versions (Kotlin 2.1.20, Compose 1.7.3, kotlinx.serialization 1.8.0) Learn more 👉 https://kotl.in/fe6st7

There’s a new Exposed website! exposed Take a look at the sleek new portal to the Exposed SQL library for Kotlin: • 🔎 Explore and compare Kotlin DSL and SQL examples using the nifty Kotlin/SQL slider. • 📄 Access documentation and support channels. • 🤝 Connect with the community. Check it out: https://www.jetbrains.com/exposed/

🏔️ With the K2 mode set to become the default in IntelliJ IDEA 2025.1, we’re taking you behind the scenes of Kotlin compiler development. Discover how we integrated K2 into the IDE – and the impact it’s already making. https://blog.jetbrains.com/idea/2025/04/the-story-behind-k2-mode-and-how-it-works/

🏔️K K2 mode is now the default in IntelliJ IDEA 2025.1! ✨ Experience better Kotlin code analysis, improved stability, and support for the latest language features. Learn more about K2 mode and what it means for your development workflow.

🚀 kotlin notebook Kotlin Notebook comes bundled in IntelliJ IDEA 2025.1 – both Community Edition and Ultimate. It is also coming soon to Android Studio. We are excited to provide you with this powerful tool, which will assist with your everyday needs and even expand Kotlin’s applications. • Prototype code • Explore APIs • Document with live snippets • Visualize data • Teach courses And more! 👉* Learn more.*

Kintellij idea New tools in your Kotlin toolbox – built right into IntelliJ IDEA! Your JetBrains AI subscription now includes: • Junie – a Kotlin-aware coding agent that can build full features or modules from plain instructions. • AI Assistant – an AI-powered coding companion that offers smarter inline help, completions, test generation, and refactorings. These tools are made to work naturally with Kotlin. We’ve tested them across server-side, Android, and multiplatform projects. ✨ No setup is required – enable the JetBrains AI plugin in IntelliJ IDEA and start exploring! 📖 More on how they work: https://kotl.in/jetbains-ai

🧠 Are you using AI tools to develop in Kotlin? If you’re using or ever tried using AI to generate snippets, debug code, or get answers to your questions, we’d love to learn more about your experiences! 💬* Take a minute to share your feedback with us!*

kotlin notebook A practical guide to getting the most out of Kotlin Notebooks! If you're curious about how to really take advantage of Kotlin Notebooks — whether for quick prototyping, dependency management, or data visualization — we've put together a detailed guide in our latest blog post. 👉 Check it out!

ktor new "How should I structure my Ktor project for scalability, maintainability, and long-term growth?" It’s a common question among Ktor developers. In this step-by-step guide, Anton Arhipov walks you through building a minimalistic CRM while applying domain-driven design (DDD) concepts to structure your Ktor project effectively. 📖 Read the guide

Have you explored Kotlin's documentation lately? Did you find what you came for, or did something trip you up? kodee lost Take our Kotlin Documentation Survey to help us make it more useful and accessible. 🕒 Survey time: Approximately 15 minutes kodee walking Tell us what you think of Kotlin’s docs: https://surveys.jetbrains.com/s3/kdocs-slack

K Compose Multiplatform 1.8.0: Now Stable and Production-Ready on iOS! K Build mobile apps faster with shared UI code, full control over native experiences, and the confidence to ship at scale. Compose Multiplatform for iOS is now production-ready and fully equipped with everything you need to craft beautiful UIs for real-world apps. 🔥🔥🔥 Check out the latest updates in Compose Multiplatform 1.8.0 and see why it's the perfect time to start using it. 🚀

🚀 We’ve been focused on enhancing Kotlin Multiplatform for web, and a lot has been going on behind the scenes. 🛠️ Now, we’re ready to share it – check out our latest update on the present and future of Kotlin for web. ➡️ Read the blog post To share feedback or ask questions, explore topic-specific channels like #CDFP59223, #C01F2HV7868, #C0B8L3U69, and #C3PQML5NU.

gradle intensifies Gradle Best Practices gradle intensifies To enhance the developer experience, Gradle, Google, and JetBrains have collaborated to create the Gradle Best Practices guide. This guide helps teams navigate Gradle’s flexibility with clarity and consistency, enabling confident, future-proof builds. 👉 Explore the details in Gradle’s latest blog post: Gradle Best Practices – A Path to Build Happiness 👉 Check out the full Gradle Best Practices guide. P.S. We’re just getting started – more best practices and insights are coming your way, so stay tuned!

🎉 The new KMP plugin is now available for IntelliJ IDEA and Android Studio, making KMP development smoother and smarter. Key highlights include: ✨ Integrated New Project wizard 🔍 Preflight checks 🔧 Run configurations for all platforms 🧭 Cross-language support 🎨 Compose Multiplatform support 🔥 Compose Hot Reload Discover more in our latest blog post: https://kotl.in/f4tw6d Try the KMP plugin for yourself: https://plugins.jetbrains.com/plugin/14936-kotlin-multiplatform Please share your thoughts and questions here or in the dedicated #C3PQML5NU channel.

🚀 Big news: Kotlin and Azul are teaming up to boost runtime performance for Kotlin apps! From bytecode to JVM optimizations, we’re joining forces to push performance further, and early benchmarks look very promising. 🔬 Learn more in the official blog post.

Join the KotlinConf Closing Panel! kodee greetings KotlinConf is all about community, and that includes you, wherever you are! Even if you couldn’t make it to the venue, you can still be part of the conversation. Post your Kotlin questions or upvote your favorites in the Slido app. We’ll answer as many as we can during the Closing Panel. 👉 kotl.in/closing

kodee greetings If you missed the KotlinConf 2025 opening keynote or if you just want to rewatch the highlights, the full recording is now available online. 🎥 Watch the keynote here: 📝 Or if you’re short on time, check out our recap with the main highlights: kotl.in/conf25unpacked

K The new Kotlin for server-side content roundup is here! From gRPC best practices to Ktor tutorials and Spring tips, here’s what the community has been working on: 📖 Injecting functions in Spring Boot 📖 Learning Ktor through a Spring Boot lens 🎥 📖 Kotlin + gRPC article series 🎥 Tag your posts with #KotlinServerSide to get noticed! 👉 Read more: https://kotl.in/22zbqk

✨ At this year's KotlinConf, we've introduced Koog, an open-source agentic framework that empowers developers to build and run AI agents entirely in idiomatic Kotlin. Koog is designed to tackle a wide range of challenges, from obvious ones like fast onboarding, simplified agent creation, pre-defining strategies, and seamless MCP protocol support to more advanced capabilities like response streaming and efficient handling of long contexts and query histories. 🛠️ Start building your own agents with Koog: https://docs.koog.ai/ 💬 We’d love to hear your feedback! Please share it in the #C08SLB97W23 channel.

🚀 The HTTP Client plugin is now in Android Studio! Generate and run HTTP requests directly from your code, with support for Retrofit, OkHttp and Ktor. Enjoy seamless editor integration, code completion, and more. 🔗 Read our blog for full details!

🚀 Ktor 3.2.0 is out, bringing new features and performance improvements! ✨ New DI and HTMX modules 📦 Gradle version catalog support 🛠️ Automatic config deserialization 🔌 Unix socket support for CIO 👉* Read the release blog post to learn more!*

📣 Gradle 9.0.0 RC1 is out and ready for testing! • 🔧 Configuration Cache is now the recommended execution mode • ☕ Gradle requires Java 17+ to run, but you can still build with older Java versions • 💼 Updated to #Kotlin 2.1 and #Groovy 4.0. It means new language features in the DSLs • ⚡ Improved Kotlin DSL build script compilation avoidance • 🧹 Clean up the deprecated APIs, • 🐛 Bug fixes and many minor improvements Full changelog: https://docs.gradle.org/9.0.0-rc-1/release-notes.html Please report any issue on GitHub - https://github.com/gradle/gradle/issues ! Slack Conversation