Kotlin

The current compilation approach to Kotlin Multiplatform projects works, but sometimes can lead to unexpected or hard-to-predict behavior. For example: The IDE analysis disagrees with the compiler on an overload, type inference, or whether the code should compile at all – with the IDE being stri…

The Kotlin 2.4.20 release is out! This release brings performance improvements, bug fixes, and tooling updates, and more. Take a look!

Kotlin Toolchain 0.12.0 is out, with multiplatform library publishing, a Wasm app preview, Compose Hot Reload from the command line, and more.

This release brings MCP server for AI agents in Compose Hot Reload, automatic font fallback for web, and v2 version of the window and dialog API for desktop.

Learn how to make expected failures visible in Kotlin function signatures with sealed error types and Either.

Search, filter, and compare 4,200+ Kotlin Multiplatform projects, or bring up-to-date library data into your coding agent with klibs.io’s AI integrations.

Exploring Compose HTML as a solution for SSR on JVM, offering a type-safe way for JVM developers to build server-rendered UI without separate templating languages.

This post relates findings about language migration from the 2025 State of Developer Ecosystem survey. In general, project requirements are still the most common reasons for switching languages.

Kotlin turns 15. Explore the new AI benchmark, latest Kotlin releases, Shipaton 2026, Golden Kodee winners, and learning resources.

Somewhere in your notes there's an app idea waiting for a free weekend that never comes. Consider this its official deadline: RevenueCat Shipaton 2026, the world's biggest mobile hackathon, runs August 1 to September 30. If you know Kotlin, that idea is closer to the App Store than you think. …

Qodana 2026.2 makes it easier for development teams to act on code quality, security, and compliance findings throughout the development workflow. This release introduces clearer code coverage insights for pull requests, highlights uncovered new lines directly in the IDE, and automatically detects c…

Learn how OAuth2 and JWT work together to secure Spring Boot APIs with token validation, scopes, roles, and fine-grained access control.