The CERN Program Library is a large collection of general-purpose programs maintained and offered in both source and object code form on the CERN central computers. Most of these programs were developed at CERN and are therefore oriented towards the needs of a physics research laboratory. Nearly all, however, are of a general mathematical or data-handling nature, applicable to a wide range of problems.
The library is heavily used at CERN and it is distributed in binary or source form to several hundred laboratories and computer centres outside CERN.