distributed-database — open-source software health

100Exceptionalhealth index

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.

Go★ 40.5KSep 16, 2026

Apache-2.0Sep 16, 2026 · metrics 2.10.0

PyPI · Go

99Exceptionalhealth index

apple/foundationdb

FoundationDB - the open source, distributed, transactional key-value store

C++ · C★ 16.7K↓ 26K/moOct 2, 2026

Apache-2.0Oct 2, 2026 · metrics 2.10.0

crates.io · npm

98Exceptionalhealth index

GreptimeTeam/greptimedb

The open-source observability database. One columnar engine for metrics, logs, and traces, on object storage.

Rust★ 6,578Aug 28, 2026

Apache-2.0Aug 28, 2026 · metrics 2.10.0

PyPI

98Exceptionalhealth index

citusdata/citus

Distributed PostgreSQL as an extension

C · PLpgSQL★ 12.8KOct 20, 2026

AGPL-3.0Oct 20, 2026 · metrics 2.10.0

Maven

98Exceptionalhealth index

trinodb/trino

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

Java★ 13.2KAug 27, 2026

Apache-2.0Aug 27, 2026 · metrics 2.10.0

Maven

97Exceptionalhealth index

apache/shardingsphere

Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.

Java★ 20.8KSep 16, 2026

Apache-2.0Sep 16, 2026 · metrics 2.10.0

97Exceptionalhealth index

etcd-io/etcd

Distributed reliable key-value store for the most critical data of a distributed system

Go★ 52.3KSep 16, 2026

Apache-2.0Sep 16, 2026 · metrics 2.10.0

crates.io · PyPI

97Exceptionalhealth index

surrealdb/surrealdb

A scalable, distributed, collaborative, document-graph database, for the realtime web

Rust · SurrealQL★ 33K↓ 162.2K/moSep 16, 2026

Custom licenseSep 16, 2026 · metrics 2.10.0

Maven · PyPI

96Exceptionalhealth index

StarRocks/starrocks

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance for multi-dimensional analytics, real-time analytics, and ad-hoc queries. A Linux Foundation project.

Java · C++★ 12.1KSep 17, 2026

Apache-2.0Sep 17, 2026 · metrics 2.10.0

Maven

92Excellenthealth index

scalar-labs/scalardb

Universal HTAP Engine

Java★ 642Sep 20, 2026

Apache-2.0Sep 20, 2026 · metrics 2.10.0

91Excellenthealth index

cockroachdb/cockroach

CockroachDB — the cloud native, distributed SQL database designed for high availability, effortless scale, and control over data placement.

Go★ 32.5KSep 18, 2026

Custom licenseSep 18, 2026 · metrics 2.10.0

Hex

89Excellenthealth index

rabbitmq/khepri

Khepri is a tree-like replicated on-disk database library for Erlang and Elixir.

Erlang★ 490↓ 134.2K/moSep 9, 2026

Apache-2.0Sep 9, 2026 · metrics 2.10.0

Maven · npm

84Excellenthealth index

apache/zookeeper

Apache ZooKeeper

Java★ 12.8KAug 27, 2026

Apache-2.0Aug 27, 2026 · metrics 2.10.0

crates.io · PyPI

73Goodhealth index

alopex-db/alopex

The unified database engine: native SQL, vector search (HNSW), and columnar storage in one Rust engine — from an embedded file to a distributed cluster.

Rust · Python★ 3↓ 5,241/moOct 21, 2026

Apache-2.0Oct 21, 2026 · metrics 2.10.0

crates.io

62Moderatehealth index

cnosdb/cnosdb

A cloud-native open source distributed time series database with high performance, high compression ratio and high availability.

Rust★ 1,756Sep 15, 2026

AGPL-3.0Sep 15, 2026 · metrics 2.10.0

56Moderatehealth index

kivigo/kivigo

KiviGo is a lightweight, modular Go key-value store library with a unified client API, pluggable backends (Badger, Redis, DynamoDB, etc.), and interchangeable encoders. It simplifies backend switching, testing with a mock backend, health checks, and batch operations for production-ready applications.

Go★ 3Sep 19, 2026

MPL-2.0Sep 19, 2026 · metrics 2.10.0

Maven

34At Riskhealth index