Tigress

7.9easy start · #1 of 33
in Code Obfuscation Software

Free to practise onyes
Free trialyes
Well documentedyes
Runs where you workyes

Runs on Android, Linux, Mac, Windows.

Tigress is ranked #1 of 33 in code obfuscation software on The Geeks Club. It runs on Android, Linux, macOS, Windows. There is a free plan. A free trial is offered.

Tigress plans and pricing

All plans

Research use Free Free for non-profit organizations tigress.wtf · 4 Oct 2026

Commercial license Not published Contact the University of Arizona licensing department for a license Required for use in a for-profit organization tigress.wtf · 4 Oct 2026

Compared on code obfuscation software

Free plan: No
Supported targets: C99 source; Linux, Darwin, Android, Windows; Intel and ARM; WebAssembly; GCC, Clang, Emscripten, and cl
Anti-tamper controls: Yes
Control-flow obfuscation: Yes
String encryption: Yes
Deployment model: self_hosted
Build integration: cli

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The record

Purpose: Tigress is a diversifying obfuscator for C designed to defend against static and dynamic reverse engineering.
How it works: It transforms C source code into new C source code according to sequences of command-line transformations and options.
Output variety: A single input program can produce multiple different output programs.
Targeting: The site lists Linux, Darwin, Android, and Windows, plus Intel, Arm, and WebAssembly targets and 32- and 64-bit output.
Nonprofit use: Tigress is free to use for non-profit organizations.
Commercial licensing: Commercial use in a for-profit organization requires a license from the University of Arizona; users can try Tigress for any length of time before deployment.
Source availability: The source is not generally open source; the maker says it may be shared with researchers at universities or research labs on request.
Research audience: The maker encourages reverse-engineering researchers to attack Tigress-generated code and software-protection researchers to compare techniques against its transformations.
Student use: The maker presents Tigress as a tool for students to learn code obfuscation and create reverse-engineering challenges.
Commercial support: The maker offers consulting and invites users to contact them about unsupported features or target platforms.
Known limitation: The issues page lists Tigress as slow on huge programs.
Security guidance: The maker says users should conduct a detailed security analysis before using software-protection techniques, including assessing protected assets, performance budget, and adversary capabilities.
Diversification: The same input program can be transformed into multiple different output programs.
Transformation families: Its documented transformations include control flow, data, functions, integrity, and anti-analysis transformations.
Price from: Free

Where it ranks on The Geeks Club

Best Code Obfuscation Software in 2026#1 of 33

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Sources

tigress.wtf/tigress-quickstart.html· checked 4 Oct 2026
tigress.wtf· checked 4 Oct 2026
tigress.wtf/tigress-download.html· checked 4 Oct 2026
tigress.wtf/practitioners.html· checked 4 Oct 2026
tigress.wtf/academics.html· checked 4 Oct 2026
tigress.wtf/students.html· checked 4 Oct 2026
tigress.wtf/issues.html· checked 4 Oct 2026
tigress.wtf/recipes.html· checked 4 Oct 2026
tigress.wtf/tigress-crossCompile.html· checked 4 Oct 2026
tigress.wtf/tigress-mergeFiles.html· checked 4 Oct 2026
tigress.wtf/about.html· checked 4 Oct 2026
tigress.wtf/download4.html· checked 4 Oct 2026