.NET Application License Protection

Prevent piracy of your .NET application with Quick License Manager



Perpetual, trial and subscription licenses.
Online and Offline activation
Automated subscription renewal process
Upgrades without issuing a new license



Integration with eCommerce Providers
Automated email notifications
Automated fraud detection
Analytics data collection



State of the art Graphical User Interface
Web Portal for license key management
Trial Registration Web Form
Built-in backup and Disaster Recovery support

License Protection for

.NET Desktop Apps

License Protection for


  • .NET 2.0 and .NET 4.0+ applications
  • 32 bit or 64 bit or AnyCPU applications
  • WinForms
  • WPF
  • ASP.NET 2.0
  • ASP.NET 4.0+
  • 32 bit or 64 bit or AnyCPU applications
  • Sharepoint


Add License Protection to your .NET application whether it is a .NET WinForms application, a .NET WPF application, an Office add-on, a web service, a Sharepoint app, etc..

With QLM’s .NET Licensing Framework, you can provide permanent, trial or subscription based licensing to your customers. Your customers can easily activate their license online when connected to the internet or offline if they are not connected to the internet.

Here are some of the features supported by QLM’s .NET Licensing System:

  • Bind a license key to a specific computer
  • Create time limited trial license keys
  • Online and Offline activation of license keys
  • eCommerce integration with leading eCommerce providers
  • Fully automated workflow for Subscription based products
  • Add a Check for Updates feature to your software so that your customers are always current with your latest release
  • Send scheduled customized email messages to your customers to notify them of specials and/or upcoming releases.
  • Track installs and uninstalls of your software to assist you in understanding customer behavior and improve download trends

The QLM API is available as a .NET assembly that you reference in your project.

For WinForms and WPF, QLM includes .NET User Controls for license activation that you simply drop into your form. These User Controls provide a user interface that allows the user to enter a license key and activate it. This eliminates most of the coding required to integrate QLM into your application.

To help you get started, we provide many .NET samples that you can use as a reference to implement licensing in your own .NET application. The samples are located in the following folders:

%Public%\Documents\Quick License Manager\Samples\qlmpro\Windows\DotNet
Step by Step Guides


Meet  just a few of our happy clients



Register to recieve your license

To evaluate QLM and receive a trial license key, complete the registration form. A license key and a download link will be emailed to you.

This download includes support for all platforms: Windows, Android, iOS, Mac, etc.

If you do not receive an email or if the registration from below does not work as expected, send us an email at support@soraco.co to request a trial license.