mahmoud amin

Allows you to display a list of recent twitters within a particular twitter user using your keys or any public feeds without keys. follow this link to learn more details http://itfoundation-om.com/get-twitter-api-keys/

twitter it foundation widget

Allows you to display a list of recent twitters  within a particular twitter user using your keys or any public feeds without keys.

wokamoto

Adds a new type of feed you can subscribe to. 
 http://example.com/feed/json or <code>http://example.com/?feed=json</code> to anywhere you get a JSON form. 
 http://example.com/feed/json?callback=callback or <code>http://example.com/?feed=json&callback=callback</code> to anywhere you get a JSONP.

Feed JSON

Adds a new type of feed you can subscribe to.

twitter it foundation widget vs Feed JSON