At present time, Open Source Intelligence (OSINT) tools are used in various fields, including journalism, business analysis, cybersecurity, and networking. Although there are various tools available in the IPv6 domain, each tool has limitations in its features, which require the use of multiple applications to achieve a thorough analysis of the network. As a result, the process of effectively collecting IPv6 data often becomes quite challenging, which could compromise the reliability of the results. The IPv6 OSINT Network Analyzer seeks to address this challenge by merging the essential features of the currently available tools, with a particular focus on IPv6, into a single unified desktop application. This application enables the extraction of data across all layers of the TCP/IP protocol suite, retrieving MAC vendor information and geographic location from external APIs, as well as facilitating node identification, vizualization of network topology, and identification of blacklisted addresses. It also enables saving and loading results to a JSON file, making it convenient for future use. This paper serves as an introduction to the IPv6 OSINT Network Analyzer, exploring its functionalities and practical applications. In addition, it reflects on the insights gained from its implementation and outlines future directions for research and development.