CKAN is an open-source DMS (data management system) for powering data hubs and data portals. CKAN makes it easy to publish, share and use data. It powers catalog.data.gov, open.canada.ca/data, data.humdata.org among many other sites.
An archiving tool with an IM-style interface that prioritizes privacy and accessibility, integrated with various archival services including Internet Archive, archive.today, IPFS, Telegraph, and file systems.
Omeka S is a web publication system for universities, galleries, libraries, archives, and museums. It consists of a local network of independently curated exhibits sharing a collaboratively built pool of items, media, and their metadata.