English translation: system software (or management software)
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Explanation: Could also be a management software, such as FoxPro or something of that nature. But for one who is not a computer engineer they might refer to le logiciel central as system software or operation software.
Thanks everyone for your suggestions. I didn't have more context than I gave you, but comparing the use of the phrase in a few more contexts I found, this answer seems to me to be the best. Thanks to M. Le Renard. 3 KudoZ points were awarded for this answer