Alternatives

The Best Fernflower Alternatives in 2026

24 alternatives1 free · 23 open source

Looking for something like Fernflower? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 23 are open source.

About Fernflowergithub.com/fesh0r/fernflower
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Decompile Java bytecode to Java source with Fernflower, used in IntelliJ IDEA.

PricingNot confirmed
Platforms—

Top picks at a glance

Quick comparison

#AlternativePricingOpen sourcePlatforms
1jadx —Yes—
2Twitter Text Java —Yes—
3JEnv For Windows —YesWindows
4jd-gui —YesWindows, macOS
5Awexplor.github.io —YesWeb
6frog —YesLinux, macOS
7shimmytok FreeYes—
8go-geom —Yes—
9ML.NET —Yes—
10Retext —Yes—
24 shown

All Fernflower alternatives

1

jadx

github.com/skylot/jadxOpen source
Also covers open source and programming · same kind of open-source project

Convert Android DEX bytecode into Java source with jadx, a decompiler documented in this project repository.

6

frog

github.com/LanguageMachines/frogOpen source
Also covers open source and programming · same kind of open-source project

Frog combines memory based NLP modules for Dutch, including tagging, lemmatization, morphology analysis, and dependency parsing.

7

shimmytok

github.com/Michael-A-Kuykendall/shimmytokFreeOpen source
Also covers open source and programming · same kind of open-source project · free

The shimmytok project provides a pure Rust GGUF tokenizer compatible with llama.cpp and ready for WebAssembly.

9

ML.NET

github.com/dotnet/machinelearningOpen source
Also covers open source and programming · same kind of open-source project

ML.NET provides an open source, cross platform machine learning framework for .NET applications.

10

Retext

github.com/retextjs/retextOpen source
Also covers open source and programming · same kind of open-source project

Retext processes natural language through a plugin based toolkit in the unified JavaScript ecosystem.

12

natural

github.com/NaturalNode/naturalOpen source
Also covers open source and programming · same kind of open-source project

Natural provides general purpose natural language processing utilities for applications built with Node.js.

13

pgmpy

github.com/pgmpy/pgmpyOpen source
Also covers open source and programming · same kind of open-source project

pgmpy provides Python tools for causal inference and probabilistic reasoning.

15

stdlib

github.com/stdlib-js/stdlibOpen source
Also covers open source and programming · same kind of open-source project

The stdlib project provides a numerical library for JavaScript and TypeScript applications.

20

RunMat

github.com/runmat-org/runmatOpen source
Also covers open source and programming · same kind of open-source project

RunMat executes MATLAB syntax for math and physics, with GPU acceleration and geometry or finite element support.

No alternatives match this filter.

Alternatives to similar tools

All alternatives
What is the best alternative to Fernflower?
Based on features, tags and platforms, the closest alternatives to Fernflower are jadx, Twitter Text Java, and JEnv For Windows.
Is there a free alternative to Fernflower?
Yes. shimmytok is free or offer a free plan.
Are there open-source alternatives to Fernflower?
Yes: jadx, Twitter Text Java, JEnv For Windows, and jd-gui.

Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative