matrix-media-repo (aka MMR) is a highly customizable multi-domain media repository for Matrix. Intended for medium to large deployments, this media repo de-duplicates media while being fully compliant with the Matrix specification.
Smaller/individual homeservers can still use this project, though it may be difficult to set up or have higher than expected resource consumption. If you're looking for an S3 connector, please consider using synapse-s3-storage-provider instead.
Community help and support is available at #mediarepo:t2bot.io.