https://stooq.com/q/d/?s=%255Espx&c=0
(translation of the small window):
Zarzadzaj opcjami = Manage options
Zgadzam sie = I agree
write at the top left (in the box: Symbol np): ^SPX and then click on: Kwotuj
check that in the bottom left-hand corner the following is selected: Historical data
choose Interval: Daily, Weekly, Monthly, etc...
click at the bottom on: Download data in csv file
You can get the Indexes of the whole World, by writing in the box: Symbol np
DJI (Down Jones Industrial)
SPX (S&P 500)
Nasdaq
FTSE (United Kingdom)
DAX (Germany)
Nikkei (Japan)
Nifty (India)
IDX (Indonesia)
FTSE MIB (Italy)
etc...
