Welcome to International Conference on Free Software and Software Tools (ICFSST -25), an international conference that brings together experts, researchers, educators, and students from around the world to share their experiences and exchange knowledge. Our upcoming conference will be held on 17th - 18th December 2025 in Tarija, Bolivia, and will feature a range of sessions, including keynote speeches, panel discussions, workshops, and poster presentations. Our aim is to create a collaborative and stimulating environment that encourages networking, idea-sharing, and knowledge transfer between participants. At this conference, you can expect to enjoy a diverse range of activities that are designed to engage and inspire you. You will have the opportunity to learn from prominent speakers, participate in interactive discussions, and discover new trends and technologies that are shaping the future.