Alternate EXE Packer is a program that packs EXE runnable files and DLL libraries, so that they can unpack themselves on their own when it+s time to run them.The advantage of this system is that the files you pack with Alternate EXE Packer don+t need the program to unpack, which makes it easier to send or distribute them on the web. The user interface is very simple: you only have one button to open the file you want, another to compress or decompress, and finally an option to select the compression ratio.Alternate EXE Packer is a completely free tool that takes up very little space on your hard drive: just under one megabyte.