Drush make has a primitive makefile generation capability. To use it, simply change your directory to the Drupal installation from which you would like to generate the file, and run the following command:
drush generate-makefile /path/to/make-file.makedrush generate-makefile /path/to/make-file.make
You get make-file.make with a list of modules. Then you can load these modules in other project. Read http://www.drush.org/en/master/make/#usage