gradle intensifies Check out the new Declarative Gradle EAP! https://kotlinlang.slack.com/archives/C19FD9681/p1732124037840559

☃️ Ho-ho-hold on to your code! Advent of Code 2024 is almost here, so it’s time to sleigh some coding puzzles with Kotlin. It's the perfect opportunity to level up your Kotlin skills, whether you are a beginner or looking to finally tackle that advanced Kotlin feature you’ve been curious about. Here’s what’s in store: • For the first 12 days, join @Sebastian Aigner and special guests, who will go to walk through the daily puzzle. • You’ll also have the support of our amazing community in #C87V9MQFK Slack channel, where everyone shares tips, ideas, and solutions – learning together makes it all the more fun. • Our most active and creative community members will be in the running for cool Kotlin prizes. So join in, solve some Advent of Code puzzles, and enjoy the holiday coding spirit with Kotlin!

🚨 Black Friday Special! 🚨 KotlinConf 2025 tickets and workshops are on sale for 2 days – starting now! ✨ If you haven’t yet, grab your conference ticket or sign up for a full-day workshop now. 👉 https://kotlinconf.com/registration/

KThe Kotlin 2.1.0 release is out! This version introduces new language features, tooling updates, performance improvements, and important fixes. : • New language features in preview: Guard conditions in

when

with a subject, non-local

break

and

continue

, and multi-dollar string interpolation. • K2 compiler updates: More flexibility around compiler checks and improvements to the kapt implementation. • Kotlin Multiplatform: Stable Gradle DSL for compiler options, and more. • Kotlin/Native: Improved support for

iosArm64

and other updates. • Kotlin/Wasm: Multiple updates, including support for incremental compilation. • Gradle support: Improved compatibility with newer versions of Gradle and the Android Gradle plugin, along with updates to the Kotlin Gradle plugin API. 🔗 Learn more

💜 Are you a Kotlin Multiplatform developer? We need your input to make Kotlin Multiplatform even better! Take our survey, share your thoughts, and get the chance to win your very own Kodee plushie! kodee loving Your opinion counts! kodee walking Take the survey today.

🔔 ️Less than a month left to submit your project to the Kotlin Multiplatform Contest! Students and recent graduates, this is your last chance to win a trip to KotlinConf 2025 in Copenhagen, Denmark – with tickets and accommodation covered. Hop on board: https://kotl.in/contest-lc

✨ Now’s the perfect time to explore WebAssembly with Kotlin! Safari 18.2 is here with support for WasmGC! This marks a huge milestone, as WasmGC is now available in all major browsers, and it unlocks even more possibilities for web development with Kotlin/Wasm and Compose Multiplatform for Web. 👉 Try Kotlin/Wasm today: kotl.in/wasm 🎥 To learn more, check out Kotlin/Wasm Team Lead @bashor's KotlinConf’24 presentation,

Kotlin/Wasm: Present and Future▾

. You can join the conversation in our dedicated #CDFP59223 channel!

If searching for suitable Kotlin Multiplatform libraries feels like a chore, we’ve got exciting news for you! 🎉 Introducing the alpha version of klibs.io – a web service that speeds up and simplifies discovering KMP libraries that best meet your specific needs. Spend less time searching and more time building! You can discover libraries by purpose and supported platforms (JVM, Android JVM, Wasm, JS, and Kotlin/Native). 👉 Learn more about klibs.io in our latest blog post and give it a try! S Join the conversation and share your feedback in a dedicated #C081AF4JK70 channel.

🔔 Friendly reminder to students and recent graduates: Only one week left to submit your project to the Kotlin Multiplatform Contest! Don’t miss your chance to win a trip to KotlinConf 2025 in Copenhagen with tickets and accommodation covered. Submit your project by January 14, 2025 ⤵️ https://kotlinconf.com/contest/

kotlinconf24 Become a KotlinConf 2025 volunteer! 📅 When: May 21–23, 2025 📍 Where: Copenhagen, Denmark 🤝 What you’ll do: • Register attendees • Help attendees navigate around the venue • Assist with event administration ✨ What you’ll get: • Free access to talks when off duty • Opportunities to meet new people in the Kotlin community • Regular coffee breaks and a free lunches Apply before January 20: https://kotlinconf.com/volunteers/

📣 Share your thoughts on Kotlin 2.1 features! Have you tried guards, multi-dollar interpolation, or non-local break/continue? Let us know how they’re working for you, and help shape the evolution of Kotlin. 👉 Take the survey: https://kotl.in/s2ay9o

📢 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. 🚀