LAPPIS, a Brazilian FOSS lab led by women, fosters collaboration and engagement in open-source software (OSS). Our mission is to increase the involvement of young South Americans, women, and underrepresented groups in high-impact open-source projects, overcoming barriers such as language, impostor syndrome, and inclusion. We have established various OSS local communities, including a chatbot architecture trained in Portuguese and a social participation app called "Empurrando Juntas," which uses artificial intelligence techniques to group participants based on their opinions. Currently, we are developing an OSS project called "Brasil Participativo," in collaboration with the federal government, which serves as Brazil's digital participation platform. This is going to be our main project in GSoC 2024In its first year, the platform attracted over 1.5 million active participants, representing the largest online social participation effort orchestrated by the government in Brazil. The platform is an OSS solution developed using Decidim, a digital open framework for citizen participation, supplemented with machine learning modules for recommendations and moderation.