1 GreptimeTeam/greptimedb GitHub The open-source observability database. One columnar engine for metrics, logs, and traces, on object storage.
6.7k ★ open 2 milvus-io/milvus GitHub Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search
46.4k ★ open 3 pingcap/tidb GitHub TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and native support for transactions, analytics, and vector search. No data silos. No noisy neighbors. No infrastructure ceiling.
40.6k ★ open 4 yugabyte/yugabyte-db GitHub YugabyteDB - the cloud native distributed SQL database for mission-critical applications.
10.6k ★ open 5 nats-io/nats-server GitHub High-Performance server for NATS.io, the cloud and edge native messaging system.
20.9k ★ open 6 ClickHouse/ClickHouse GitHub ClickHouse® is a real-time analytics database management system
50.4k ★ open 7 quarkusio/quarkus GitHub Quarkus: Supersonic Subatomic Java.
15.9k ★ open 8 apache/rocketmq GitHub Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.
22.6k ★ open