Unisondb

UnisonDB is an open source, log native database aimed at AI agents and edge computing. Its tagline is that it replicates like a message bus and acts like a database. It pairs a B+Tree storage engine with write ahead log replication, so data written on a central server can be streamed to many read only edge replicas that stay consistent and durable. Replication works in two ways. A live gRPC stream pushes the log to replicas, while an object store backed mode publishes the log as immutable segment files that any number of readers can poll directly from S3, MinIO, Google Cloud Storage or Azure Blob. The second mode means teams already running object storage do not need an always on streaming path for every replica. Writes can be committed by a Raft quorum on the write servers for high availability when that is enabled. The storage layer is multi model, supporting key value, wide column and large object data, which lets one system hold the different kinds of state an agent or edge application needs. Namespaces act as isolated databases, each with its own replication streams and consistency guarantees, to support multi tenant deployments. The architecture is described as removing the need for separate message buses or change data capture pipelines, and it targets local first applications that compute near the device and depend less on the cloud. It is built for backend and infrastructure engineers. The site publishes no pricing, since the software is distributed as open source.