PDF file merge
If you have more than one PDF files with multiple pages and you need to merge all the files into a single pdf file. Then you can move on internet and search for that. There are many more websites that are providing the free facility to combine multiple PDF files and generate one single file.
But due to security issues we can not upload important pdf files to any website that are proving this type of facilities.
I have created this .Net Windows application that will take multiple pdf files and combine them into one single pdf file. The more important thing is that I have made it with batch processing. So just select the directory which having the pdf files.