most often used processor is INTEL XEON surpassed HP'S  PA-RISC.ITS RISING  from 76 system at june to 152 system in november.
Intel’s Xeon surpassed HP’s PA-RISC to become the most often used processor, rising from 76 systems in June to 152 systems in November.
refers to any software whose source code is made available free for any third party to review and modify  - mozilla - firefox and thunderbird