HackSummit` brought together non-profit organizations, technology sponsors like `Neo4j`, and local developers to tackle social and environmental issues over a two-day period. Teams used `Neo4j` to power apps for various causes, such as limiting water shortages, improving health and fitness, creating affordable housing, and localizing charitable giving. One team created a platform called `Circulare` that tracked donations overtime to support a local non-profit, while another group built an app called `Socrates` that aimed to reduce inequality by connecting underprivileged youth with professional networks and business connections. The `Socrates` app won the `Neo4j` challenge, showcasing innovative use of graph databases for social impact.