ArchivesSpace is a crucial open-source application designed specifically for managing archives, manuscripts, and digital collections. Developed by archivists for archivists, it addresses the unique complexities of archival organization that off-the-shelf software cannot. The tool supports the entire lifecycle of archival work, including accessioning (intake), arrangement (preserving original order and hierarchy), description (creating finding aids), preservation (tracking physical conditions and location), and access (enabling researcher discovery). Its stability and longevity are ensured by its foundation in mature technology and a strong community model. ArchivesSpace is not just software; it’s a community-supported initiative where users are owners, contributing to its development and direction. This collaborative approach, funded by a tiered membership model, allows for professional support, ongoing development, and ensures the software evolves to meet the actual needs of its users without the influence of profit motives. This model fosters innovation, standardization, and efficiency, allowing institutions to leverage shared resources and plugins, ultimately saving time and money. The community governance ensures that feedback is heard, giving users a real voice in the software’s future, making it a powerful and sustainable model for critical digital infrastructure in cultural heritage.