Weaviate
Weaviate is an open source vector search engine that stores both objects and vectors, allowing for combining vector search with structured filtering with the fault-tolerance and scalability of a cloud-native database, all accessible through GraphQL, REST, and various language clients.
SeMI Technologies maintains Weaviate's open-source core and hosts the Weaviate Cluster Services, allowing customers to run managed Weaviate instances and get support through service license agreements.