Comparision of different selenium components

S.No	Selenium IDE	Selenium RC	Selenium Webdriver
01	Easy to Install	Installation is easier than Selenium IDE but tougher than webdriver.	Installation is easier than RC but tougher than IDE.
02	Supports Record and Play Back	Doesn’t support Record and Play Back	Doesn’t support Record and Play Back
03	Supported only in FireFox	Supported in FF and other browsers as well like Chrome,Safari Opera.	Supported in FF and other browsers as well like Chrome,Safari Opera.
04	Core engine is javascript	Core engine is javascript based.	Interacts natively with browser
05	Doesn’t support listners.	Doesn’t support listners.	Support implementation of  listners.
06	Slowest execution.	Faster execution than IDE but slower than Webdriver	Fastest execution
07	Don’t support testing of Android/iOS application	Don’t support testing of Android/iOS application	Support testing of Android/iOS application.
08	Programming language knowledge is not required	Programming language knowledge is required.	Programming language knowledge is required.
09	Does not have API	Have smaller API	Have Large API