The American Council on Education (ACE) recommends many professional development courses for college credit. For instance, The National Fire Academy (NFA) offers free, independent-study courses that are recommended for credit by ACE. Microsoft certifications are recommended for credit as are many Straighterline, Penn Foster, and ALEKS courses. Check the ACE National Guide for details and be sure to check the effective dates. Sometimes courses shown in the National Guide were approved for credit in the past, but not currently.
ACE credit is generally accepted at the "big three" (Thomas Edison State University, Charter Oak State University and Excelsior College).
ACE will transcript the courses recommended for credit. According to the ACE website, the transcript is "lifelong" and does not expire.
For a list of courses and certifications recommended for ACE credit, check http://www2.acenet.edu/nationalguide/
For National Fire Academy (NFA) courses, http://www.nfaonline.dhs.gov/browse/index.shtm
For FEMA courses (transcripted by EMI, not ACE), http://training.fema.gov/IS/crslist.asp