Arlatex is an archiving program like shar, tar, zip, etc. Its output is specifically designed for use with LaTeX. Arlatex takes the name of a master .tex file and and the ancillary files it uses (such as .tex, .sty, .cls and .eps files). From these files, arlatex creates a single file that will recreate all the ancillary files when it's run through LaTeX.

The author is Scott Pakin.