[en] Analysis and interpretation of Sandia National Laboratories' Prompt Fission Neutron and Multi-Element logging data have relied heavily on computers. This report describes the computer programs used for these purposes. Both locally-written and public domain codes have been used, and are described here. The intent of this report is to discuss the function and features of the programs, but not to describe the mechanics of the programming; this is contained in the commented listings of the codes, which are available from the author. The codes described in this report cover field logging tape conversion, data reduction for Prompt Fission Neutron logs, Multi-Element logs, and ancillary logs, and plotting and listing of analyzed results. All the codes written for this project at Sandia National Laboratories are in the public domain, and are available from the author