Download TLL Core

OPTION 1: Add to your project using

If you are using Visual Studio and Nuget, just open Nuget Package Manager console and use following command to install latest version of Treek’s Licensing Library.

Install-Package TreeksLicensingLibrary

Installation notes for Nuget

OPTION 2: Manual download and install

In case you would like to manually download and reference DLL, use following link:

Installation notes

  • Download is zip archive, contains two folders
    • V1 folder contains TreeksLicensingLibrary.dll; LibraryToolbox.exe and documentation file
    • V2 folder contains latest version – TreeksLicensingLibrary2.dll; LibraryToolbox2.exe, documentation file and TLB file in case you need C/C++ (without .NET) integration.
  • To add libary into your Visual Studio project, simply use the References tab in project options
  • Use toolbox to generate your licenses and license keys
  • Use TLL V2 Init Chunk for easy integration
    • This way, you will need only few lines of code to make licensing working within your app.
  • Visit also documentation and examples to get more information
  • EXE and DLL files are digitally signed
  • Library supports .NET 2.0+; COM applications (C, C++); VB for applications (VBA)
  • TLL V2 supports .NET 4+ (.NET 4 Client Profile incl.); COM applications (C, C++); VB for applications (VBA)
  • Works on Windows 2000 and newer
  • Works with all .NET languages


You can’t redistribute TreeksLicensingLibrary.dll or TreeksLicensingLibrary2.dll without purchasing a license. It’s possible to obtain affordable license easily and quickly. Without developer license, TLL will display demo warning screen.