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Zelix KlassMaster

zelix.com

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Spec score 7.4 #26 of 34 in Code Obfuscation Software

Spec sheet

Purpose
Zelix KlassMaster obfuscates Java code to make reverse engineered source code less useful and protect it from decompilation and reverse engineering.Read 9 Oct 2026 · zelix.com
Support
Technical support directs users first to the FAQ and online documentation, then to email support with product version, JVM, operating system, and error details where applicable.Read 9 Oct 2026 · zelix.com
Android
The FAQ says Zelix KlassMaster supports Android by obfuscating Java class files before they are converted into an APK.Read 9 Oct 2026 · zelix.com
Automation
ZKM Script can automate obfuscation and integrate it into a build cycle, and the product also has a GUI and build tool interface.Read 9 Oct 2026 · zelix.com
Build integrations
The vendor provides a basic Gradle plugin and documents calling Zelix KlassMaster through a generic Java API; newer Gradle versions may cause failures due to bytecode instrumentation.Read 9 Oct 2026 · zelix.com
Evaluation limit
The evaluation license is for one computer and 30 days, and the evaluation version flow-obfuscates only one or two methods in each class.Read 9 Oct 2026 · zelix.com
Java compatibility
The product can process bytecode compiled for Java 1.1 through Java 27, including modules.Read 9 Oct 2026 · zelix.com
License terms
A standard commercial license is perpetual, non-exclusive, and non-transferable for use on one computer.Read 9 Oct 2026 · zelix.com
Obfuscation features
Features include flow, exception, name, reference, method parameter, string, integer, and long obfuscation or encryption.Read 9 Oct 2026 · zelix.com
Privacy and security
The privacy policy says Zelix uses reasonable measures to protect personal information but cannot guarantee absolute security; it also says it does not sell or rent personal information.Read 9 Oct 2026 · zelix.com
Reflection and packaging
AutoReflection handles complicated Java Reflection API calls, and Smart Save simplifies handling JAR, resource, and Enterprise Java Beans deployment descriptor files.Read 9 Oct 2026 · zelix.com
Runtime platforms
The vendor says the Java-based product should run on platforms with a Java 8 or later virtual machine and lists tested Windows, Linux, and macOS environments.Read 9 Oct 2026 · zelix.com
Size reduction
Name obfuscation reduces package, class, field, and method name sizes, while Trim removes unused classes, fields, and methods.Read 9 Oct 2026 · zelix.com

Plans and prices

Small Developer $290, paid once Per license One machine · organization of no more than two people, including employees or contractors in the prior 12 months Read 9 Oct 2026 · zelix.com
Standard $585, paid once Per license One machine · organizations of three or more people, or with three or more employees or contractors in the prior 12 months Read 9 Oct 2026 · zelix.com
2 machine multi-license $1,025, paid once Per license purchase 2 machines Read 9 Oct 2026 · zelix.com
3 machine multi-license $1,318, paid once Per license purchase 3 machines Read 9 Oct 2026 · zelix.com
4 machine multi-license $1,610, paid once Per license purchase 4 machines Read 9 Oct 2026 · zelix.com
5 machine multi-license $1,900, paid once Per license purchase 5 machines Read 9 Oct 2026 · zelix.com
Site license $2,195, paid once Per license purchase Any number of machines at one physical location Read 9 Oct 2026 · zelix.com

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