whichdb

Data model

Event Store databases

Immutable streams of events as the source of truth, built for event sourcing and CQRS. The leading options are KurrentDB (EventStoreDB), Axon Server and LiveStore.

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5 active · ordered by fit for this category, then WhichDB Score

KurrentDB (EventStoreDB)Event Store

A purpose-built event store for event sourcing, with streams, subscriptions and projections.

18.6
Axon ServerEvent Store

AxonIQ's event store and message router for Axon Framework CQRS and event-sourced apps.

7.5
LiveStoreRelationalopen source

Event-sourced local-first data layer: reactive SQLite on the client, rebuilt from a synced event log.

15.5
OrbitDBDocumentopen source

Serverless peer-to-peer database on IPFS and libp2p using Merkle-CRDT logs.

9.7
KahaDBKey-Valueopen source

Apache ActiveMQ Classic's built-in journal-plus-B-tree message store; a persistence engine, not a general DB.

0.0

deprecated, discontinued & research · 3

PumpkinDB discontinuedTrailDB discontinuedOrigoDB discontinued

related

Event sourcing →Embedded / in-process →Transactional apps (OLTP) →Pub/Sub messaging →Queues & jobs →Local-first sync →Stream processing →Mobile & offline →

license legend · Open source (permissive) · Open source (copyleft) · Source-available · Proprietary