TTFA Merge PDF helps in pdf merge. You can merge any number of pdf's together and also arrange them in your preferred order. If needed, you can also add bookmarks to the merged pdf. There is also facility to rename the bookmarks.
Full Specifications
What's new in version 1.5
General
ReleaseSeptember 24, 2013
Date AddedSeptember 24, 2013
Version1.5
Operating Systems
Operating SystemsWindows 2003, Windows 8, Windows Vista, Windows, Windows Server 2008, Windows 7, Windows XP