Difference between Abstract Factory and Builder Pattern

[Kartik Shah]

What is the key difference between Abstract Factory and Builder Pattern?

[Ashish Jaiman]

quoting from gof
Abstract Factory has the factory object producing objects of several classes. Builder has the factory object building a complex product incrementally using a correspondingly complex protocol

[Anonymous]

Abstract Factory & Builder pattern are both creational patterns. Each have different intents..
Abstract Factory pattern is about creating related families of objects.
Builder pattern is to decouple the representation from the complex construction proces, so that the same construction process can be used for different representations.
Hope this helps.
Anil

[Kartik Shah]

That clears up my doubt.
Thanks