Obfuscar

At a glance

• Editor score
  6.4 / 10
• Pricing
  Free plan
• Best for
  Free, configurable .NET metadata obfuscation
• Free plan
  Yes
• Paid from
  Free
• Facts checked
  21 Sep 2026

• Where it wins

  • Renames broad .NET metadata categories through XML rules
  • Hides strings and controls public and private API visibility
  • Supports NuGet, .NET global tool, and strong-name re-signing

• Where it doesn't

  • Focused on .NET assemblies rather than broader target types
  • Control-flow and anti-tamper protection are outside its stated scope
  • No integrations are specified beyond CLI-oriented distribution

Our verdict on Obfuscar

Obfuscar is an open-source .NET assembly obfuscator from LeXtudio Inc., distributed under the MIT license. It is designed for developers who need to make decompiled .NET code harder to follow without adopting a paid product. The tool renames types, methods, properties, events, fields, and namespaces, and supports string hiding through encoded string data and lookup methods. It runs on Windows, macOS, and Linux, with .NET assemblies as its supported target.

Configuration is the central part of Obfuscar's workflow. XML files define assemblies, dependencies, output paths, and inclusion or exclusion rules for types and members. Configuration fragments allow settings to be split across files, while controls for public and private APIs help preserve selected interfaces during obfuscation. The published distribution options—NuGet package and .NET global tool—fit build-oriented command-line workflows and desktop development environments. Strong-name assembly re-signing is available through a key file or key container, which is relevant when protected assemblies need to retain a signing process.

Obfuscar's main advantage is its narrow, configurable focus: it provides free metadata obfuscation, string hiding, API controls, and signing support without a paid tier structure. Its stated scope does not extend to verified control-flow or anti-tamper protection, so teams seeking those protection layers should evaluate another tool. Choose Obfuscar when .NET renaming and related configuration controls are the priority; choose an alternative when broader defensive techniques or a specified integration ecosystem are required.

Your product? Our editors can test Obfuscar in depth and publish a review, labelled as paid · from $149/mo →

Obfuscar pricing

Obfuscar fact sheet

Alternatives to Obfuscar

• ByteHide ShieldBroad application protection across .NET, web, Android, and iOS with a free plan.9.4
• JscramblerA focused JavaScript protection suite for teams securing browser and Node.js applications.9.2
• DotfuscatorA broad .NET protection toolkit with a free personal-use entry point and quote-based paid plans.9.0

See all Obfuscar alternatives →

Featured on iTechGuides

Obfuscar is listed in our Code Obfuscation Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update