The Global GraphHack 2019 event saw 17 teams work on innovative applications with Neo4j at their core, focusing on extending the graph ecosystem. The submissions were impressive, ranging from graph creation tools to solutions for performance optimization and even linear algebraic equations. The three winning teams will receive prizes including airfare and tickets to GraphConnect 2020, as well as opportunities to present their projects and meet with Neo4j executives. The event showcased remarkable projects from seasoned engineers to newcomers, highlighting the potential of the Neo4j community.