Introducing a simple windows application developed using C# for merging PDF files. This application requires Microsoft .NET framework 4.5. This is a portable application.
All you want to do is
Download the zip file from this page
Unzip the files
Run the GeekiestPDFTool.exe
Add Files using the “Select Files” button
Use the Up, Down arrows to re order the added files if required
Select output folder (by default it will be set to C drive)
Change the output filename if needed
This application is developed using C# and iTextSharp library.