Flowsint is an open-source tool designed for OSINT (Open Source Intelligence) investigations. It focuses on ethical use, emphasizing responsible practices outlined in its ETHICS.md file. The software is still under development, inviting community contributions for feature proposals and issue reporting. Installation is straightforward, requiring Docker and Make. Users can set up the application by cloning the repository and running a few commands, after which they can create an account on the local server. The tool employs a graph-based interface to visualize relationships between entities. It includes various enrichers for domains, IPs, ASNs, and social media, among others. For instance, domain enrichers can perform tasks like reverse DNS resolution and WHOIS lookups, while IP enrichers provide geolocation data. Flowsint also supports cryptocurrency investigations, social media searches, and email checks against data breach databases. Each of these functionalities is modular, allowing developers to add new features or enhancements easily. Flowsint is intended for legitimate use cases such as cybersecurity research, journalism, and law enforcement investigations. It explicitly prohibits misuse, including unauthorized surveillance or harassment. The project is organized into distinct modules, ensuring modularity and clear structure. Each module has its own testing suite, and contributors are encouraged to follow specific guidelines for adding new functionalities or updating documentation. The emphasis on ethical practices and community involvement makes Flowsint a collaborative resource for those engaged in responsible OSINT work.