We’ve covered two freeware tools PDF Sam and PDFTK Builder in the past, both lets you combine and split PDF files, where Ultra PDF Merger is a freeware portable app allows to merge several PDF files into one, it does its job what being said.
Using Ultra PDF Merger
Download the program archive and extract its contents to folder and run UltraPDFMerger executable. From the program interface, click “Add button” to add PDF files you want to join via Explorer, and click Merge Files button to let program to bind PDF files and output PDF file will be saved to the directory you mentioned earlier.
You can order the position of PDF files by selecting a PDF file and by using Move up and down buttons. You can remove a file by selecting it and clicking “Remove” button. This program doesn’t joins password protected or locked files, if you add one such file whole PDF joining process may fail.
Ultra PDF Merger works on Windows XP/Vista/7.