The use of open source software and technologies represents a strategic choice based on transparency, reliability, and technical quality. Developing and distributing open-source solutions allows anyone to inspect, verify, and improve algorithms, ensuring that the software is not a black box but a verifiable tool. This model fosters collective progress in which knowledge is not isolated, but becomes a common good available to developers and researchers. Choosing open source also ensures the longevity of projects, as source code availability protects users from obsolescence and the restrictions of proprietary systems. In critical fields such as medicine or mathematical optimization, sharing technical documentation and code is essential to enable the scientific validation and evolution of existing solutions. Ultimately, supporting free software is a way to ensure that technology remains democratic, accessible, and geared toward solving real-world problems through collaboration.