And other products :

- http://stooq.com/q/d/?s=^spx&i=d&l=100

Some of the symbols have quotes from 1800!!

Different sources with ohlc, or only close values, csv, hst :

- https://research.stlouisfed.org/fred2/tags/series
- http://www.federalreserve.gov/releas...efault1989.htm
- http://www.forexltd.ru/ru/services/quotesarchive
- http://www.rba.gov.au/statistics/his...exchange-rates
- http://ec.europa.eu/eurostat/web/exc.../data/database
- http://www.stat-search.boj.or.jp/ssi/mtshtml/d_en.html