Prolog+CG is a CG-Based logic programming language which integrates Prolog, the manipulation of conceptual graphs (CGs), Java and object-oriented constructs. It provides a powerful development environment for the creation of knowledge-based applications and their integration on the web. Java provides object-oriented capabilities allowing the development of multiplatform applications. Object-oriented Prolog provides the full power of an object-oriented logic programming language and CGs provide the expressive power of an advanced knowledge representation language. This paper presents the recent extensions that have been added to Prolog+CG and illustrates some typical uses of the environment for the development of various applications.