Tracy is an open-source Kotlin library that adds production-grade observability to AI-powered applications in minutes. It helps you debug failures, measure execution time, and track LLM usage across model calls, tool calls, and your own custom application logic. Ultimately, comprehensive observabili...

So, you’re coming to KotlinConf’26? Maybe it’s your first time in Munich, or even your first time at KotlinConf. You have your tickets, you’ve learned the schedule by heart, but it might still feel a little overwhelming. Let me show you how you can have the best possible experience by guiding you th...

At JetBrains, we aim to make Kotlin development as accessible and efficient as possible across the entire ecosystem. While IntelliJ IDEA remains the premier IDE for Kotlin, we recognize that many developers use Visual Studio Code for a variety of tasks and projects. To help streamline the transition...

KotlinConf 2026 is starting to take shape, and there’s a lot happening across the Kotlin ecosystem right now. From the first conference speakers and community awards to new releases, tools, and real-world Kotlin stories at serious scale, I’ve gathered all the highlights you won’t want to miss. Let’s...

This tutorial was written by an external contributor. Over a decade ago, Netflix became one of the early adopters of microservice architecture, showcasing its potential at a large scale. Since then, many companies have jumped on the microservices bandwagon, building their backends this way from day ...

Hi! Already coming to KotlinConf in Munich? Kick off the conference with a full day of hands-on workshops on May 20. Not going yet? Then this is a good moment to get your KotlinConf ticket and start with a workshop that matches what you want to learn. Asynchronous programming with Kotlin coroutines ...

TL;DR: The Kotlin Foundation is launching a mentorship program that pairs experienced open-source maintainers with new Kotlin contributors to help them make their first meaningful contributions, with branded swag and a chance to win a trip to KotlinConf. I still remember my first contribution to an ...

We hope you’re staying up to date with our latest posts and have checked out our tutorials on how to create coding agents in Koog and connect ACP-compliant agents to your JetBrains IDE. As useful as these guides are, one important piece was hitherto missing from the puzzle: How do you make your Koog...

When people think about tooling for Android development, the conversation often gravitates towards platform-specific concerns: UI performance, layout validation, device compatibility, or resource management. Yet for many Android teams, the most persistent challenges don’t sit at the platform level –...

Previously in this series: Agents eventually run out of context. When they do, they crash, and you lose everything mid-task. We’ve been running GPT-5 Codex since Part 1. It scores 0.58 on SWE-bench Verified. We tried Claude Sonnet 4.5 next, which scored 0.6 and ran faster on most tasks. But complex ...

With each KotlinConf, developers from around the world come together to learn from leading experts, explore the latest industry insights, and engage with the Kotlin community. KotlinConf’25 alone welcomed attendees from over 50 countries. KotlinConf’26 is just a few months away, and we’re excited to...

Ktor 3.4.0 improves stability and addresses outstanding issues. Highlights include OpenAPI generation, Ztsd support for the compression plugin, duplex streaming for OkHttp, Structured concurrency integrations for the HTTP request lifecycle, and much more. For a detailed list of all the changes, chec...