Now days we can find many automation tools for many purpose, but most of them is very complex and little hard to use and maintain. Like Selenium, iOpus iMacros also record activities in the browser and play recorded activity again and again. Like Selenium IDE it is and add on of Mozilla Firefox browser but iOpus iMacros can be installed other browser(IE, Google Chrome, Cometbird etc.) rather than Mozilla Firefox. Like other add on it is very easy to install and use.
Some easy tutorials for using this add on can be found in following links