BRITE is a universal topology generator designed to produce synthetic topologies that accurately reflect the structure and properties of the actual Internet. The goal is to create a framework that is representative, inclusive, and interoperable. Representativeness ensures that synthetic topologies capture key aspects of the Internet, such as hierarchical structure and node degree distribution. Inclusiveness allows combining multiple generation models into a single tool, while interoperability provides interfaces for simulation and visualization tools. The Internet's topology is complex and constantly evolving, making it challenging to model accurately. Existing topology generators often focus on network connectivity or structural characteristics, neglecting other properties like link bandwidths and delays. BRITE aims to address these issues by offering a flexible, extensible, and user-friendly tool that supports a wide range of generation models. It allows researchers to evaluate the pros and cons of different models and facilitates the development of new ones. BRITE supports multiple generation models, including flat router-level and AS-level models, as well as hierarchical topologies. It can import topologies from other generators and generate its own formats. The BRITE Analysis Engine (BRIANA) provides analysis routines for any imported topology. BRITE's architecture is based on a Model class, which allows for the extension of new models. The tool is designed to be efficient, robust, and compatible with simulation environments like ns and SSF. BRITE's design includes a flexible topology generation process with steps such as placing nodes, interconnecting them, assigning attributes, and outputting the topology. It supports various bandwidth distributions and uses models like RouterWaxman and RouterBarabasiAlbert for generating topologies. Comparative studies using BRITE show that it can generate topologies that reflect fundamental properties of the Internet, such as power-law distributions in node outdegrees. BRITE is a versatile tool that enables researchers to generate and analyze Internet topologies, supporting both protocol and topology generation research. It is designed to be extensible, allowing for the integration of new models and improving the accuracy of synthetic topologies. The tool is expected to evolve further, incorporating more hierarchical models and enhancing its capabilities for future research.BRITE is a universal topology generator designed to produce synthetic topologies that accurately reflect the structure and properties of the actual Internet. The goal is to create a framework that is representative, inclusive, and interoperable. Representativeness ensures that synthetic topologies capture key aspects of the Internet, such as hierarchical structure and node degree distribution. Inclusiveness allows combining multiple generation models into a single tool, while interoperability provides interfaces for simulation and visualization tools. The Internet's topology is complex and constantly evolving, making it challenging to model accurately. Existing topology generators often focus on network connectivity or structural characteristics, neglecting other properties like link bandwidths and delays. BRITE aims to address these issues by offering a flexible, extensible, and user-friendly tool that supports a wide range of generation models. It allows researchers to evaluate the pros and cons of different models and facilitates the development of new ones. BRITE supports multiple generation models, including flat router-level and AS-level models, as well as hierarchical topologies. It can import topologies from other generators and generate its own formats. The BRITE Analysis Engine (BRIANA) provides analysis routines for any imported topology. BRITE's architecture is based on a Model class, which allows for the extension of new models. The tool is designed to be efficient, robust, and compatible with simulation environments like ns and SSF. BRITE's design includes a flexible topology generation process with steps such as placing nodes, interconnecting them, assigning attributes, and outputting the topology. It supports various bandwidth distributions and uses models like RouterWaxman and RouterBarabasiAlbert for generating topologies. Comparative studies using BRITE show that it can generate topologies that reflect fundamental properties of the Internet, such as power-law distributions in node outdegrees. BRITE is a versatile tool that enables researchers to generate and analyze Internet topologies, supporting both protocol and topology generation research. It is designed to be extensible, allowing for the integration of new models and improving the accuracy of synthetic topologies. The tool is expected to evolve further, incorporating more hierarchical models and enhancing its capabilities for future research.