Open source. Open possibilities.

TiDB is an open-source, cloud-native distributed SQL database with ACID transactions, horizontal scalability, Raft-based high availability, HTAP via TiKV and TiFlash, MySQL 8.0 compatibility, and vector search support.

SurrealDB is a multi-model database built in Rust, unifying document, graph, relational, time-series, geospatial, and key-value data with real-time and vector search capabilities.

CockroachDB is a cloud-native distributed SQL database built on a transactional, strongly-consistent key-value store. It scales horizontally, survives disk, machine, rack, and datacenter failures, supports ACID transactions, and is PostgreSQL wire-protocol compatible.

FrogDB is a pre-release, Redis 8.0-compatible, memory-first database written in Rust. It speaks RESP2/RESP3 for drop-in use with existing Redis clients and provides core and module-style data types, JSON, time series, vector and full-text search, Raft-based clustering with read replicas, and RocksDB-backed persistence.

Trino is a fast distributed SQL query engine designed for big data analytics, formerly known as PrestoSQL.

etcd is a distributed, reliable key-value store written in Go that uses the Raft consensus algorithm for highly available replicated logs. It offers a simple gRPC API, TLS security, and is widely used in production for critical distributed system data, notably with Kubernetes.