V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PSL
       PD Service Lage (Haendler)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PSL
       Public Software Library


The Free On-line Dictionary of Computing (30 December 2018):

PSL

   

   1. Portable Standard Lisp.

   2. Problem Statement Language.