Can we create add-on for IE? If yes where can i find required resources/docs?
Some references,
A New IE Add-on Site -- reference.
The site has two objectives: to make it easier for users to find valuable add-ons and to promote our partners who develop add-ons.
You can have your add-on included by submitting it through the Internet Explorer Add-on site and you no longer have to be a member of the Microsoft Partner program to be included.
Add-on-CON blog.