It looks as Clarion v.2.1 to me ... it was ran under DOS.
*.mem are
memo files, *.dat files hold data and .k* files are indexes. Therefore, concentrate onto *.dat ones.
I worked with it 10 years ago and memories are in mist somewhere, but I
*think* that you can NOT extract data unless you install Clarion. There is an option in developer to
unload data into a (text) file which could be then imported elsewhere.
Installation came on a few floppy disks if I remember well, so - if there's any kind of a trial Clarion program for download, it won't take much time to grab it
