McDeob
McDeob is free software for remapping and optionally decompiling Minecraft server and client JAR files.
What McDeob is
McDeob is free software for remapping and optionally decompiling Minecraft server and client JAR files. It downloads the matching game JAR and mappings, processes the file, and provides remapped or decompiled code in an archive for unzipping. SpecialSource performs remapping, while FernFlower converts class files into Java source. Minecraft 1.14.4 and later, including releases and snapshots, use Mojang mappings. Supported older versions from 1.7.10 through 1.13.2 include only the last release of each major version and use Searge mappings. Minecraft 26.1 and later JARs skip remapping because they are no longer obfuscated; release notes state version 3.4.1 fixed decompilation for the 26.1-and-later client JAR. Java 21 or later is required, with at least 3 GB of RAM recommended. Windows, macOS, and Linux are supported. Resulting files are restricted to personal use.
Good
- Processes server and client JAR files
- Supports Mojang mappings for newer versions
- Optional FernFlower decompilation
- Provides archives ready for unzipping
- Free and Apache-2.0 licensed
Watch out
- Requires Java 21 or later
- At least 3 GB RAM is recommended
- Resulting files must not be distributed
- Older versions have limited release coverage
Who it suits
McDeob suits Minecraft developers or users who need locally remapped or decompiled JAR contents on Windows, macOS, or Linux.
Verdict
McDeob provides a focused Minecraft JAR remapping and decompilation workflow with version-specific mapping coverage. Users must meet its Java requirement and keep generated files for personal use.
The facts
Each one read from McDeob's own pages, with the date it was checked.
What it does
- Decompilation
- The README identifies FernFlower as the tool used to decompile class files into Java source files.checked 7 Oct 2026
- Distribution limit
- The README says the resulting files are for personal use and must not be distributed or uploaded to sites such as GitHub.checked 7 Oct 2026
- Install guidance
- The project wiki has separate install and run instructions for macOS and Windows/Linux.checked 7 Oct 2026
- Install instructions
- The project wiki provides separate installation and running instructions for macOS and Windows/Linux.checked 7 Oct 2026
- License
- The repository identifies its license as Apache-2.0 and notes that the bundled tools have their own licenses.checked 7 Oct 2026
- Maintainer location
- The ShaneBeeStudios GitHub profile lists Vancouver, Canada.checked 7 Oct 2026
- Minecraft versions
- The README says versions 1.14.4 and later use Mojang mappings, while older supported versions use Searge mappings.checked 7 Oct 2026
- Older version coverage
- For versions 1.13.2 and earlier, the README lists only the last release for each major version from 1.7.10 to 1.13.2.checked 7 Oct 2026
- Older versions
- For versions 1.7.10 through 1.13.2, it includes only the last release of each major version and uses Searge mappings.checked 7 Oct 2026
- Output
- The remapped or decompiled Minecraft code is provided in an archive users can unzip.checked 7 Oct 2026
- Processing
- The tool downloads the relevant Minecraft JAR and mappings, then processes the JAR and provides the resulting files for unzipping.checked 7 Oct 2026
- Processing tools
- McDeob uses SpecialSource for remapping and FernFlower to decompile class files into Java source files.checked 7 Oct 2026
- Project license
- The repository includes an Apache License 2.0 license file.checked 7 Oct 2026
- Purpose
- McDeob is a re-mapping and deobfuscation tool for Minecraft server and client JAR files.checked 7 Oct 2026
- Requirements
- The README lists Java 21 or later and recommends at least 3 GB of RAM.checked 7 Oct 2026
- Use restriction
- The README says resulting files are for personal use and must not be distributed because they contain proprietary Minecraft code.checked 7 Oct 2026
- Version 26.1+
- The release notes say Minecraft 26.1+ JARs are no longer obfuscated and skip remapping; version 3.4.1 fixed decompilation of the 26.1+ client JAR.checked 7 Oct 2026
- Workflow
- It downloads the matching Minecraft JAR and mappings, remaps the JAR, and can optionally decompile it.checked 7 Oct 2026
The company
- Maker location
- The ShaneBeeStudios GitHub profile lists Vancouver, Canada.checked 7 Oct 2026
Where it runs
- Mapping coverage
- Minecraft 1.14.4 and later include releases and snapshots and use Mojang mappings.checked 7 Oct 2026
- Remapping
- The README identifies SpecialSource as the tool used to remap Minecraft JARs using Mojang mappings.checked 7 Oct 2026
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