RustWeek 2026 brought more than 900 Rust developers, educators, and maintainers to Utrecht, Netherlands, for a few days of talks, hallway conversations, community meetups, hackathons, and workshops about all things Rust. As a Gold sponsor for the third year in a row, the RustRover team joined the event to support the …

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The Kotlin 2.4.0 release is out! Here are the main highlights: For the complete list of changes, refer to What’s new in Kotlin 2.4.0 or the release notes on GitHub. How to install Kotlin 2.4.0 The latest version of Kotlin is included in the latest versions of IntelliJ IDEA and Android Studio. To update to […] Link to …

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WPF Hot Reload is now available in Rider, starting with the 2026.2 EAP 2 build. You can edit your XAML while your app is running under the debugger and see the changes immediately, with no rebuild, no restart, and no losing your place in the application. Together with the C# Hot Reload support that’s already […] Link …

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Toolbox App 3.5 focuses on making daily work smoother and managed development environments easier to monitor. The app now supports interface zooming with familiar shortcuts, provides OpenTelemetry metrics for enterprise remote development connections, and handles several long-standing reliability issues more …

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In 2026, the world of AI is changing at a serious pace. The days of AI systems dealing solely in single-prompt interactions are coming to an end. Instead, these models are evolving into agentic systems – long-running, goal-driven software enabled by agentic frameworks that are becoming a critical layer in modern …

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The moment a plugin needs account data, a simple API call turns into an authentication problem. The bad shortcut is familiar: ask the user to create a personal access token (PAT), make them paste it into settings, and hope it never leaks. For a JetBrains IDE plugin, use this flow instead: the user clicks the […] Link …

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Trained from scratch and designed for practical deployment, Mellum2 is built for routing, Q&A, sub-agents, and private AI use in software engineering systems. Today, we’re open-sourcing Mellum2, a 12B model engineered to solve the hardest parts of production AI: latency, throughput, and cost. Built from scratch and …

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Most TypeScript projects already run ESLint with @typescript-eslint. That covers a lot: explicit any, floating promises, non-null assertions, and more. If your linting setup is solid, you’re catching the obvious issues in the editor before code review. ESLint rules can’t produce cross-file findings. Each rule runs …

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Disclaimer: This article was created using AI-based writing and communication companions. With their help, the core topics of this rich and nuanced livestream were distilled into a compact blog post format. How do Rust IDEs understand code? That was the central question explored in a recent RustRover livestream …

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Hibernate 7.4 introduced several improvements that simplify loading a page of data along with their associated child collection, historical data access, and audit logging. The article will focus on the following features: You can check out the sample code for this article in this GitHub repository. Limits and Fetch …

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AlphaEvolve is a Google DeepMind algorithm-discovery system that uses Gemini to generate, test, and refine possible algorithm improvements. Its job is not to answer questions; it searches for faster ways to solve complex algorithmic problems. We tried it on a narrow but important part of IntelliJ-based IDEs: indexing, …

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Hey! This month’s list is short, but every item is worth your time. Apply for one of up to 40 JetBrains Foundation scholarships for the CSAI BSc program by June 9, try a new AI tools course for developers, discover a program that brings hands-on coding practice into JetBrains IDEs, and read about the value of […] Link …

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Today we’re rolling out the first bug-fix for TeamCity On-Premises 2026.1 servers. This update addresses over 20 issues and performance issues, including: See TeamCity 2026.1.1 Release Notes for the complete list of resolved issues. Why update? Staying up to date with minor releases ensures your TeamCity instance …

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After careful consideration, we have made the difficult decision to sunset DataSpell as a standalone product. DataSpell was created to focus on the needs of data science and analytics professionals within the JetBrains ecosystem. It allowed us to build and refine a dedicated experience for working with Jupyter …

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dotMemory Unit has long served as a unit testing framework for detecting memory issues in .NET code. We are grateful to everyone who has used it as part of their development and testing workflows. After careful consideration, we have decided to retire dotMemory Unit. The project will no longer receive active …

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Cloud9 and JetBrains have been working together on projects that connect software development and esports, from the Sky’s The Limit hackathon to custom tools built for live events, podcasts, and team content. One of the latest results of this collaboration is Cloud9 JetStream, a custom theme for JetBrains IDEs. The …

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This is a guest post from Iulia Feroli, founder of the Back To Engineering YouTube community. In this tutorial, we build a live object detection app using TensorFlow and PyCharm, then deploy it onto the Reachy Mini open-source robot for real-time object tracking. Reachy Mini is a compact open-source robot built in …

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Last week at the KotlinConf 2026 keynote (watch the recording here), we announced Koog 1.0. Koog is JetBrains’ open-source framework for building AI agents in Kotlin and Java. It provides the core building blocks for agentic applications: tools, workflows, persistence, memory, observability, and integrations with …

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