Open source appropriate technology refers to technology designs and processes that are freely accessible and modifiable by anyone. Some synonyms for this term include free and open-source technology, sustainable technology, and grassroots technology. These terms highlight the concept of creating technology that is accessible to all, regardless of socioeconomic status or geographic location. Open source appropriate technology can be used to address a variety of social and environmental challenges, such as access to clean water, renewable energy, and basic healthcare. By sharing knowledge and resources, individuals and communities can collaborate to create more sustainable and equitable solutions through open source appropriate technology.