This talk will give an overview of existing tools, technologies and techniques for writing and maintaining technical documentation for open source projects. This talk will give an overview of existing tools, technologies and techniques for writing technical documentation for open source projects and how to keep them up-to-date, interesting and accessible. We will also talk about the impact that good (and bad) documentation can have on a community. Keynote, ainda elaborando :D Mas quero falar de como documentação gerada por IA é uma má ideia, do impacto que a documentação tem na comunidade de usuários e contribuidores e como garantir que contribuições para a documentação sejam tão valorizadas quanto código. Melissa Weber Mendonça Melissa is an applied mathematician and former university professor who fell in love with open source communities. She has been involved with the Python and PyData communities for some time, with a focus on outreach, education and DEI. She works at Quansight as a Senior Developer Experience Engineer, is a maintainer for NumPy, SciPy and napari, and believes in the power of contributions beyond code.