Runtime environment based on OpenJDK for running IntelliJ Platform-based products on Windows, macOS, and Linux
JetBrains Runtime is a fork of OpenJDK that provides a runtime environment for running IntelliJ Platform-based products on Windows, macOS, and Linux. Built by JetBrains, it extends OpenJDK with features including enhanced class redefinition via DCEVM technology, optional integration of JCEF (Java Chromium Embedded Framework) for embedding Chromium-based browsers, and improvements to font rendering, keyboard support, windowing, HiDPI, accessibility, and performance. The project also includes desktop integration enhancements and bugfixes not yet present in upstream OpenJDK, and is available in multiple release branches corresponding to different JDK versions (JDK 25, 21, 17, and 11).