i would also split professional and hobby purposes...
Professionally i have a list of about 5 or 6
Altium (99%.)
Allegro
PADS
CB5000
Boardstation
DxDesigner
The others are mainly at customer sites to help their designers out. Mostly i import their desiigns into altium and chew them up there.
Hobby
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Altium ( i am on subscription with them as well )
Have used , but no more ( most were dos versions , years ago .. )
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Orcad ( under DOS.. never used windows versions ) Used a lot in school
SmartWork.... (remember that ? CGA only... later they did an EGA one F1 place pad F2 remove pad F3 place copper stub F4 remove copper stub... and a command line DIP 600 24 E gave you a dip 600 mil rowpitch 24 pins eastern rotation ... ) Made maybe 15 boards with this in school on a original IBM-XT 4.77 Mhz ... ( no turbo !)
HiWire ( successor to smartwork )
Target (used once)
Protel (Dos ... this is how i rolled into altium
Protel for windows
Protel 99
Protel 99SE
Protel DXP
Protel DXP2004
Ultiboard (used once or twice)
PCAD (used once in a course)
Cadstar ( used a few times )