Ravel Remapper vs Vineflower

Ravel Remapper is a free, MIT-licensed IntelliJ IDEA plugin for remapping Java and Kotlin source files. Built on IntelliJ’s Program Structure Interface and Mapping-IO, it supports Mixins, Class Tweakers, and Access Wideners; MixinExtras Expression is not supported. Developers can migrate mappings between Yarn and Mojang mappings, as described in Fabric documentation. From the editor’s Refactor menu, users choose mapping files, source and destination namespaces, and modules, then run the remap. Mapping files may be added manually or downloaded in the dialog, and users can select individual modules or all modules. The project recommends committing changes first, then searching for TODO(Ravel) and fixing detected issues manually. Installation is available through JetBrains Marketplace or a ZIP from GitHub Releases. It runs on Linux, macOS, and Windows; the latest listed release is version 0.6.4.

Vineflower is a free, open-source Java decompiler for producing readable code from Java classes. It supports modern Java, including J21 and later, with automatic reformatting and multithreaded decompilation. The main distribution is a JAR from GitHub releases and Maven Central. You can run that JAR from the command line with archives or files, saving output to an archive or folder or printing it to the console. Vineflower can also be added through Maven or Gradle, and an IntelliJ plugin is available. A command-line option can emit Kotlin classes as Kotlin; the full distribution includes an experimental Kotlin decompiler plugin and other plugins for IntelliJ IDEA annotations and variable renaming. A slim artifact omits built-in plugins. Running requires a Java 17 or newer JVM. An experimental plugin system supports output changes or new JVM languages. The project calls itself a work in progress and welcomes contributions. It is licensed under Apache-2.0.