This special issue is dedicated to the theme of public interest technology (PIT) [1]. PIT acknowledges that technological potential can be harnessed to satisfy the needs of civil society. In other words, technology can be seen as a public good that can benefit all, through an open democratic system of governance, with open data initiatives, open technologies, and open systems/ecosystems designed for the collective good, as defined by respective communities that will be utilizing them. Just like in the established field of public interest law (PIL) [2], [3] and public interest journalism (PIJ) [4], we can consider potential fields around the idea of PIT [5], [6], such as public interest co-design (PITco), even public interest engagement (PITengage) or public interest consulting (PIC). For decades, public interest engineers (PIEs) have volunteered their time to collaborate in meaningful participative engagements. These engineers have self-organized some impressive collectives including E