Open-source databases. To compare with InterSystems IRIS.

Redis

Databases

For developers, who are building real-time data-driven applications, Redis is the preferre

etcd

Databases

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

ClickHouse

Databases

ClickHouse is a fast open-source column-oriented database management system that allows ge

Milvus

Databases

Milvus is a high-performance, cloud-native vector database built for scalable vector ANN s

DuckDB

Databases

DuckDB is an analytical in-process SQL database management system

TiDB

Databases

TiDB is built for agentic workloads that grow unpredictably, with ACID guarantees and nati

Qdrant

Databases

Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the

SurrealDB

Databases

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

CockroachDB

Databases

CockroachDB — the cloud native, distributed SQL database designed for high availability, e

Dragonfly

Databases

A modern replacement for Redis and Memcached

InfluxDB

Databases

Scalable datastore for metrics, events, and real-time analytics

Chroma

Databases

Search infrastructure for AI

MongoDB

Databases

The MongoDB Database

Valkey

Databases

A flexible distributed key-value database that is optimized for caching and other realtime

SpacetimeDB

Databases

Development at the speed of light

TDengine

Databases

High-performance, scalable time-series database designed for Industrial IoT (IIoT) scenari

Dolt

Databases

Dolt – Git for Data

TimescaleDB

Databases

A time-series database for high-performance real-time analytics packaged as a Postgres ext

PostgreSQL

Databases

Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we d

Dgraph

Databases

high-performance graph database for real-time use cases

rqlite

Databases

The lightweight, fault-tolerant database built on SQLite. Designed to keep your data highl

libSQL

Databases

libSQL is a fork of SQLite that is both Open Source, and Open Contributions.

Neo4j

Databases

Graphs for Everyone

QuestDB

Databases

QuestDB is a high performance, open-source, time-series database

Weaviate

Databases

Weaviate is an open-source vector database that stores both objects and vectors, allowing

Apache Doris

Databases

Apache Doris is a real-time analytics and hybrid search database for AI agents.

ScyllaDB

Databases

NoSQL data store using the Seastar framework, compatible with Apache Cassandra and Amazon

Litestream

Databases

Streaming replication for SQLite.

ArangoDB

Databases

🥑 ArangoDB is a native multi-model database with flexible data models for documents, grap

Memcached

Databases

memcached development tree

Trino

Databases

Official repository of Trino, the distributed SQL query engine for big data, formerly know

Citus

Databases

Distributed PostgreSQL as an extension

MySQL

Databases

MySQL Server, the world's most popular open source database, and MySQL Cluster, a real-tim

NebulaGraph

Databases

A distributed, fast open-source graph database featuring horizontal scalability and high

Garnet

Databases

Garnet is a remote cache-store from Microsoft Research that offers strong performance (thr

StarRocks

Databases

The world's fastest open query engine for sub-second analytics both on and off the data la

LanceDB

Databases

Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage L

YugabyteDB

Databases

YugabyteDB - the cloud native distributed SQL database for mission-critical applications.

OceanBase

Databases

OceanBase is the unified distributed database for the AI era — open-source, multi-model, o

Apache Cassandra

Databases

Open source transactional distributed database. Linear scalability and proven fault-tolera

Databend

Databases

Data Agent Ready Warehouse : One for Analytics, Search, AI, Python Sandbox. — rebuilt fr

LiteDB

Databases

LiteDB - A .NET NoSQL Document Store in a single data file

CloudNativePG

Databases

The most popular Kubernetes Operator for PostgreSQL.

ParadeDB

Databases

One Postgres for your application data, full-text search, vector retrieval, and aggregatio

RisingWave

Data Pipelines & ETL

Event streaming platform for agentic AI. Continuously ingest, transform, and serve event s

Immudb

Databases

immudb - immutable database based on zero trust, SQL/Key-Value/Document model, tamperproof

Neon

Databases

Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-lik

MariaDB

Databases

MariaDB server is a community developed fork of MySQL server. Started by core members of t

Postgres.app

Databases

The easiest way to get started with PostgreSQL on the Mac

SpiceDB

Auth & Identity

Open Source, Google Zanzibar-inspired database for scalably storing and querying fine-grai

Apache CouchDB

Databases

Seamless multi-primary syncing database with an intuitive HTTP/JSON API, designed for reli

GreptimeDB

Databases

GreptimeDB open source: metrics, logs, and traces share one table model on a columnar engi

FalkorDB

Databases

A super fast Graph Database uses GraphBLAS under the hood for its sparse adjacency matrix

Apache IoTDB

Databases

Apache IoTDB

Materialize

Databases

The live data layer for apps and AI agents. Create up-to-the-second views into your busine

RediSearch

Search

A query and indexing engine for Redis, providing secondary indexing, full-text search, vec

HelixDB

Databases

HelixDB is an OLTP graph database with native vector and full-text search built in Rust on

Apache Hive

Databases

Apache Hive

KurrentDB

Databases

KurrentDB is a database that's engineered for modern software applications and event-drive

Apache HBase

Databases

Apache HBase