Hello, I'm leaving the link for two freeware softwares for FCM data analysis, that are probably well known for the most of you (or maybe not):
WinMDI: http://en.bio-soft.net/other/WinMDI.html
WinMDI is a Windows application that reads most FCS 2.0 compliant files known from most cytometer manufacturers (in the year 2000); this is the latest version (2.9) developed by John Trotter.
and
Cylchred: http://en.bio-soft.net/other/Cylchred.html
Cylchred is a cell cycle analysis software, that works with histograms in FCS single parameter binary format with up to 1024 channels. So you may want to use WinMDI first to obtain this histograms. The latest version is 1.02, and was developed at the university of Cardiff.
Happy data analysis!

and
Cylchred: http://en.bio-soft.net/other/Cylchred.html

Happy data analysis!