Google Summer of Code 2026 With the Kotlin Foundation: Recap
Education News Google Summer of Code 2026 With the Kotlin Foundation: Recap Google Summer of Code 2026 has wrapped up! This was the Kotlin Foundation’s fourth year participating in GSoC, bringing new contributors into the Kotlin open-source ecosystem through hands-on projects and mentorship. This year, two projects successfully reached completion, tackling two areas of the […]
Python vs Go: A Practical Comparison for Developers
GoLand PyCharm Two things are true about Python: It’s the most popular programming language in the world, and it’s the most common companion language for Go developers. How do we know that? From the Developer Ecosystem 2026 survey by JetBrains. But we also know a lot more about the developers who use these two languages […]
CI/CD Pipeline Observability Tools: How to Choose the Right Setup
Tools When a CI/CD pipeline fails, its dashboard can usually show you what went wrong. Pipeline observability tools should help you understand why, whether the cause is a flaky test, an overloaded build agent, or a problem elsewhere in the delivery process. This becomes harder as pipelines grow more complex. A pipeline touches a lot […]
What We Heard at AGNTCon Europe
The night before AGNTCon + MCPCon Europe, we hosted the Agentic AI Foundation community at the JetBrains office in Amsterdam. The event filled up fast and went to a waitlist, which is not what I expected for a Wednesday evening discussion about how open foundations work. Ibrahim Malik opening the evening. The panel asked what […]
Code Quality Never Changes – Or Is AI Challenging This Notion?
Code Quality Never Changes – Or Is AI Challenging This Notion? This post was adapted from Kai Schmithuesen’s talk at JetBrains Game Development Day 2026. See the full video presentation and Q&A below, or keep reading! Table of Contents What do we mean by code quality? Why is bad code released? Using static code analysis […]
Mellum2.1 Gets to Work: A Fast Open Model for Coding Agents
News Releases Mellum2.1 Gets to Work: A Fast Open Model for Coding Agents Trained with reinforcement learning in real environments, Mellum2.1 is built for coding agents and fast sub-agents that run on your own hardware. Today, we’re releasing Mellum2.1, the next version of the 12B mixture-of-experts model we open-sourced in June. The architecture hasn’t changed […]
UI freeze reports are now available in JetBrains Marketplace
A user reports that the IDE stopped responding, and your plugin is the prime suspect. You try the same steps, but everything works. Without more details, such as a thread dump captured during the freeze, it’s hard to know where to start. JetBrains Marketplace now gives plugin authors access to UI freeze reports attributed to […]
Start Your Next KMP App With Kotlin Toolchain 0.13
The Kotlin Toolchain is a unified entry point into Kotlin. It lets you build JVM, Android, iOS, multiplatform, and server-side applications with a simple declarative configuration. With the release of v0.13, we now recommend the Kotlin Toolchain for most new Kotlin Multiplatform (KMP) projects. Earlier this year, we promoted the Kotlin Toolchain to Alpha. Since […]
Faster Developers Don’t Make a Faster Team
Agentic AI AI JetBrains JetBrains AI What engineering teams tell us about working with AI agents. Part 1 in the series. Over the past few months, I’ve spent a lot of time on discovery calls with engineering organizations, from a 16-developer software agency to telcos, game studios, and consultancies with thousands of developers. Almost none […]
Introducing Warm Agents, a TeamCity Plugin
// schedule trigger to scale warm agents up to 2 each morning schedule { branchFilter = “+:*” triggerBuild = always() withPendingChangesOnly = false schedulingPolicy = daily { hour = 8 } buildParams { param(“warmAgents.target”, “2”) } } Add a second trigger with target=0 for the evening. See this repository for a complete sample. The day-night […]