Rustemsoft makes two obfuscators. Skater is the established tool, in use for more than twenty years. Opaquer is its next-generation successor. Both stop decompilers from reading your assemblies. Here is how to choose.
The proven tool. Fully supported.
Choose Skater if you already use it, like its workflow, or need compatibility with legacy projects.
From $79.99 Standard · Professional $199.99 · Ultimate $299.99
The next generation. Built for modern .NET.
Choose Opaquer if you are starting a new protection setup and want the newest engine.
Prices are on the Opaquer site
Not sure? Skater remains fully supported, and Skater users can move to Opaquer later. Read the full comparison.
Anyone can open an unprotected .NET assembly in a tool like ILSpy and read your logic, your names, and your license checks. Skater rewrites the assembly so what comes out is impractical to follow, without changing what the program does and without changes to your source code.
Skater .NET Obfuscatorclass LicenseChecker
{
bool IsValid(string key)
{
return key.StartsWith("PRO-")
&& Verify(key);
}
}class \u0001
{
bool \u0002(string a)
{
int b = \u0003.\u0004(0x5E1);
while (b != 7) { /* ... */ }
}
}Illustrative example, simplified.
All prices are one-time solo license prices in USD. You can upgrade to a higher edition at any time. Looking for Opaquer? See Opaquer prices.
$79.99
For individual developers who need dependable protection.
$199.99
For teams that need repeatable, automated builds.
$299.99
For large organizations and distributed teams.
The product is solid and pretty fast, but my special vote goes to its support, always fast and precise.
We are very satisfied with it after 8 years. It is easy to use and does a good job. When you need support, Rustemsoft helps very fast.
Had to switch computers twice and support from Rustemsoft to transfer the license was fast. Same day.
A supplier took a demo copy of our software and sold it as their own. That is what moved us to protect our code.
Opaquer is the next-generation evolution of Skater, with improved algorithms, a modern UI, and extended enterprise features. Skater remains fully supported for customers who prefer its workflow or need compatibility with legacy projects.
Yes. Skater supports .NET Framework, .NET Core, and .NET 5 through .NET 10.
Yes. It obfuscates the underlying assemblies, including code-behind and view models, and the Standard edition encrypts WPF BAML resources.
Yes. The Professional edition's command-line interface runs in build agents and release pipelines for automated obfuscation.
Yes. You can move from Standard to Professional or Ultimate at any time, and your existing license carries over.