Open source describes practices in production and development that promote access to the end product's source materials. practical method of development as an alternative form of software development it has much wider implications. Many current alternative press sources share values on copyright with the open source movement. open source software production bottom up low cost low barrier low cost to integrate the contributions easy to contribute and participate commons based, community-driven processes for data generation FOSS, technology, commons, and developing countries >>> how does it work there? amateur mappers participatory mapping DIY crowdsourcing