Here is a list of tools to create SCORM packages, both open source and commercial.
Moodle is a modular authoring tool for courses but at this time does not create SCORM packages.
This is the perfect video webinar for instructional designers who need to start developing e-learning content for use in a SCORM 2004-compliant LMS.
There are some problems with Moodle configuration see
d=96338#p425335 Course Lab home page Easygenerator has a free edition but it is not open source.