An obfuscator can obfuscate .NET IL Code and protect .NET dll/exe assembly. Obfuscated code is unreadable and unmodifiable, it may anti-decompile and cause decompiler crashed (e.g. .NET Reflector). Obfuscator.NET supports name obfuscation (e.g. class/method/field/parameters etc.) and flow obfuscation. Decompiler can not show correct structure and code of the obfuscated assembly.

Jasob JavaScript Obfuscator is the ultimate solution for JavaScript obfuscation! Protects your JavaScript code from stealing, significantly shrinks size and improves download time and execution speed. With Jasob your JavaScript code will become impossible to understand thus preventing anyone to steal and modify it. Its size will typically shrink for around 70% which will significantly improve download time and execution speed in the web browser.

Stunnix VBS-Obfus is an advanced professional obfuscator - tool for making
VBScript code inside .vbs/.html/.asp/.php/.wsc/.wsh files unreadable and
non-restorable, with advanced GUI (Project Manager) and ActiveX symbols
extraction tool.
It includes state-of-the-art support for ASP/PHP/SSI fragments embedded inside
html code and in any place inside of VBScript code and unique support for
easy preparation of code for obfuscation.

Stunnix JavaScript Obfuscator is advanced professional obfuscator for .js/.html/.asp/.php/.wsc/.wsh files, with support for encoding and ensuring licensing condititions, with advanced GUI with Project Manager and ActiveX symbols extraction tool. It includes state-of-the-art support for ASP/PHP/SSI fragments embedded inside html code and in any place inside of JavaScript code and unique support for easy preparation of code for obfuscation.

dotNet Protector is a powerful .NET code protection system that prevents your assemblies from being decompiled. With dotNet Protector, your application is not simply obfuscated, but merged in a Win32 native executable; Console exe, windows exe and windows services can be protected. You can protect a whole application (main exe, referenced dlls and resource localisation dlls) in a single executable.

{smartassembly} is a .NET software Improvement & Protection tool. It will obfuscate and protect your .NET software, optimize your .NET assembly for better deployment, minimize distribution size, increase performance & add powerful post-deployment debugging capabilities (with advanced unhandled exception reporting). {smartassembly} efficiently enables you to deliver a smart version of your .NET assembly, in no time and with unmatched ease.

Scripts Encryptor is a handy utility to scramble (obfuscate) HTML, JavaScript/JScript, C/C++/MFC code. Unlike many other obfuscators it does not employ JavaScript for encoding, which significantly increases the number of web browsers that are able to open scrambled documents without distortion. Use it to protect your online content from unauthorized copying, reverse engineering and from webbots collecting email addresses and other personal data.

Scripts Encryptor is a handy utility to scramble (obfuscate) HTML, JavaScript/JScript, C/C++/MFC code. Unlike many other obfuscators it does not employ JavaScript for encoding, which significantly increases the number of web browsers that are able to open scrambled documents without distortion. Use it to protect your online content from unauthorized copying, reverse engineering and from webbots collecting email addresses and other personal data.

.NET Reactor protects your intellectual property by mixing any pure .NET Assembly (written in C#, VB.NET, Delphi.NET, J#, MSIL...) with conventional native code. In detail, .NET Reactor builds a native wall between potential hackers and your .NET code. The result is a standard Windows based(non MSIL compatible) file. The original .NET code remains intact, well protected by native code and invisible for prying eyes.

Stunnix CXX-Obfus is cross-platform professional obfuscator -
tool for making
C/C++ code difficult to understand and rework (even after
use of code prettyprinters), with advanced GUI (Project Manager) and ActiveX
symbols
extraction tool.
It has unique support for all dialects of C/C++ and heavy use of preprocessor,
source compression mode, has a lot of means for
easy preparation of code for
obfuscation and other unique features.