I'm looking for historic exchange rates on the major currencies. Not daily rates but rather hourly going back a few months. Does anyone know a source of this?
Most charts go back a few years on hourly, MetaTrader for example goes back to 2005, just sign up for a free demo.
Not sure if this is what you are looking for, but look under forex tag: http://pitrading.com/intraday_ascii_data_market_edition.htm Contains all the major pairs. However you will need to convert the 1 min to 60 min for your use.
Exchange rates are on the charts, sorry maybe I misunderstand what you're looking for. If you wanted to know let's say the exchange rate for Eur/Usd on 27th January 2006 at 10am GMT it was 1.2210 according to the hourly chart, as far as I know for raw data you can export it to Excel. Try here http://www.oanda.com/convert/fxhistory
Thanks for the MetaTrader tip. Although I can't use the charts for any real analysis, their demo includes a "History Center" that allows downloading of the chart data. I've been able to import it into Excel so will give it a try. The Pi Trading data sounds encouraging but unfortunately they don't seem to offer a sample of what you're buying.
I thought a sample was available on the page, maybe I am wrong about forex. I use the data for index back-tests. You can also try http://tickdata.com/. I think they have a sample/demo too.