Is it possible to trades indices like stocks?

• stock trade
• stock and trade
• ways to deal with depression

I would like to trade indices, like these


http://finance.yahoo.com/q?s=^ixic

http://finance.yahoo.com/q?s=^gspc

http://finance.yahoo.com/q?s=^gdaxi


But not using options or warrants, just like stocks. Is that possible?

Is it possible to trades indices like stocks?