Difference between Selenium IDE Vs SeleniumRC Vs Selenium Webdriver

Selenium IDE	Selenium RC	Selenium Web-driver
Only works on Mozilla Firefox.	Works on almost all browsers. Does not work on latest version  of Firefox/IE.	Works on latest versionsofalmost  all browsers-Fire fox,IE(6,7,8),  Opera,Chrome.
Record and play/run tool	No Record and run.	No Record and run.
No server required to start	Server is required to start.	No server required  to start.
Core engine is JavaScript       based to use.	Core engine is JavaScript based.	Interacts natively  with browser app -lication.
User extensions, you require       knowledge on java script            which makes the          work a little bit tough.	Its a simple and small API.	Complex and a bit large API as compa- red to RC.
Not at all object oriented.	Less Object oriented API.	Purely Object  oriented API.
Can move mouse with it.	Can move mouse with it.	Can move mouse  - cursor
Full xpaths have to be appended     with 'xapth=\\' syntax	Full xpaths have to be  appended with 'xapth=\\' syntax.	No need to append  'xpath=\\'
No Listeners.	No Listeners.	Implementation of  Listeners is  provided.
CannottestiPhone/Android applications.	CannottestiPhone/Android applications.	Can test iPhone/ Android - applications.