500+ Databases Ranked & Compared

Distributed search and analytics engine built on Apache Lucene for full-text search, observability, and security

In-memory data store used as a database, cache, message broker, and streaming engine

Open-source monitoring system and time-series database with a powerful query language and alerting

Lightning-fast, typo-tolerant search engine with AI-powered hybrid search

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

Fast open-source column-oriented database for real-time analytics and OLAP

High-performance cloud-native vector database built for scalable similarity search and AI applications

Distributed SQL query engine within Apache Spark for structured data processing at scale

Fast in-process analytical database with rich SQL support and zero dependencies

MySQL-compatible distributed SQL database for hybrid transactional and analytical workloads

Fast key-value storage library by Google providing ordered mappings with LSM-tree architecture

High-performance open-source vector database for next-generation AI applications

Multi-model database combining documents, graphs, vectors, and time-series with built-in API layer and real-time capabilities

Distributed SQL database built for cloud-native global applications with serializable isolation

High-performance embeddable key-value store optimized for fast storage on SSDs

Scalable time-series database built in Rust for metrics, events, and real-time analytics

Modern in-memory data store fully compatible with Redis and Memcached, delivering 25x more throughput

Open-source AI-native vector database for building LLM-powered applications with embeddings

The most popular document database for modern applications

Open-source high-performance key-value database forked from Redis, backed by the Linux Foundation

Open-source document database designed for real-time push updates to applications

Fast, typo-tolerant open-source search engine with built-in vector and semantic search

Stateful stream processing framework for real-time and batch data at any scale

Relational database that is also a server, running application logic inside the database with real-time client sync

High-performance open-source time-series database designed for Industrial IoT and real-time analytics

In-process SQL database compatible with SQLite, written in Rust with vector search and CDC support

Version-controlled SQL database with Git-like branching, merging, and diffing for data

Time-series database for high-performance real-time analytics, packaged as a PostgreSQL extension

A fast, local-first, reactive database for JavaScript applications with real-time replication

Serverless PostgreSQL with separated storage and compute, branching, and scale-to-zero

Simple and fast JSON database for small projects and prototyping

The world's most advanced open-source relational database

Distributed graph database with native GraphQL support built for horizontal scale

Cloud-native database clustering system for horizontal scaling of MySQL through transparent sharding

Fast, lightweight, and schema-less search backend that runs on a few MBs of RAM

Distributed SQL middleware providing sharding, encryption, and read-write splitting across any database

Ultra-fast mobile key-value storage powered by mmap and protobuf, built by WeChat

Fast, cost-effective time-series database and monitoring solution compatible with Prometheus

Lightweight, fault-tolerant, distributed relational database built on SQLite and Raft consensus

The database that syncs -- an open-source JavaScript database inspired by CouchDB for offline-first apps

High-performance time-series database with SQL and column-oriented storage for fast analytics

Native graph database with Cypher query language for connected data at scale

Distributed transactional key-value database providing ACID guarantees at scale

AI-native vector database with hybrid search and built-in model integration

Distributed, transactional key-value store with multi-model layers and strict serializability

Distributed SQL query engine for running interactive analytic queries against data sources of all sizes

Fast full-text search engine library written in Rust, inspired by Apache Lucene

Embeddable WASM Postgres under 3MB with reactivity and live sync

Lightweight, lightning-fast in-process vector database powered by Alibaba's Proxima engine

High-performance real-time analytical database for sub-second queries on large-scale data

High-performance NoSQL wide-column database compatible with Apache Cassandra and Amazon DynamoDB

Fast, embeddable key-value database written in pure Go with LSM tree and value log separation

Minimalistic IndexedDB wrapper for offline-first web apps with real-time sync

High-performance distributed memory caching system for speeding up dynamic web applications

Multi-model database unifying document, graph, and key-value in a single engine with AQL

Highly available Prometheus setup with unlimited long-term storage on object storage

Graph-relational database on Postgres with EdgeQL, built-in auth, and AI-ready embeddings

High-performance real-time analytics database for sub-second OLAP queries at scale

Community-driven open-source search and analytics engine forked from Elasticsearch

Fast full-text search library for browser and Node.js

SQLite compiled to JavaScript and WebAssembly via Emscripten for in-browser SQL databases

Fast distributed SQL query engine for big data analytics across heterogeneous data sources

Distributed PostgreSQL as an extension for multi-tenant SaaS and real-time analytics at scale

Reactive backend database with real-time sync, TypeScript-native queries, and built-in serverless functions

Multithreaded Redis fork with higher throughput and active replication

The world's most popular open source relational database

Distributed graph database built for billion-scale graphs with millisecond latency

Distributed real-time database management system built into Erlang/OTP for telecom-grade fault tolerance

High-performance MPP analytics engine for real-time and batch data warehousing

Fast open-source search database with SQL and JSON interfaces

Reactive and asynchronous database for high-performance React and React Native apps

Cloud-native search engine for observability, built on object storage with sub-second latency

Cross-platform database framework by WeChat with ORM, encryption, corruption recovery, and full-text search

Open-source multimodal vector database built on the Lance columnar format with local-first deployment

Open-source MongoDB alternative that translates MongoDB wire protocol to PostgreSQL and SQLite

Redis-compatible key-value engine with query subscriptions and hierarchical storage tiers

The most widely deployed embedded SQL database engine

PostgreSQL-compatible distributed SQL database with high resilience and geo-distribution

Distributed relational database for high-performance transactional, analytical, and AI workloads at scale

Distributed wide-column database designed for high availability and linear scalability across data centers

Lightweight embedded .NET NoSQL document database stored in a single file

Cloud-native data warehouse built in Rust for analytics, search, and AI on object storage

Postgres-compatible streaming database for real-time event processing and analytics

GPU-native vector and multimodal data lake for AI agents with deep learning integrations

Immutable, tamperproof database with cryptographic verification for zero-trust environments

Lightweight in-memory key-value cache for Go with expiration and cleanup

Community-developed fork of MySQL with enhanced features and performance

Lightweight JavaScript SQL database for browser and Node.js with Excel and JSON support

Open-source big data serving engine combining search, recommendation, and real-time AI at scale

Ultra-fast in-memory graph database using GraphBLAS, optimized for GraphRAG and knowledge graphs

Multi-master sync with a simple HTTP/JSON API

Super fast in-memory JavaScript document-oriented database for browser and Node.js

Open-source unified observability database for metrics, logs, and traces built in Rust

Unified real-time data platform combining in-memory data grid with stream processing

High-performance time-series database for IoT data with lightweight architecture and high compression

Pure Go implementation of LevelDB key-value store with LSM-tree storage

Real-time distributed OLAP datastore for ultra low-latency analytics at high throughput

Open-source graph-vector database built from scratch in Rust with compiled queries

High-performance LSM key-value store in Go, powering CockroachDB as its storage engine

Data warehouse software for reading, writing, and managing large datasets in distributed storage using SQL

Alibaba's battle-tested MySQL branch with built-in DuckDB analytics and vector search

Horizontally scalable, multi-tenant long-term storage for Prometheus metrics

Event-native database for event sourcing and event-driven architectures with built-in streaming, formerly EventStoreDB

Scalable open-source distributed graph database optimized for storing and querying billions of vertices and edges

Distributed wide-column store for random real-time read/write access to big data

Distributed in-memory database with ACID transactions, SQL, and compute capabilities

Distributed, scalable time-series database built on top of HBase for monitoring at massive scale

Embedded Java database engine providing concurrent Maps, Sets, and Queues backed by disk or off-heap memory

AI-native tensor search engine with built-in embedding generation for multimodal vector search

Multi-model database combining graph, document, key-value, and object models with SQL support and ACID transactions

Distributed time-series database built by Uber for large-scale metrics with Prometheus and Graphite compatibility

Lightweight, fast, and reliable embedded key-value storage engine based on the Bitcask model

PostgreSQL extension that adds graph database functionality with openCypher query support

Embeddable in-memory key-value database for Go with custom indexing and geospatial support

Open-source distributed SQL database combining high availability, scalability, strong consistency, and ACID transactions

AI-native database for LLM applications with fast hybrid search across vectors, text, and tensors

Fast, embeddable Java RDBMS with browser-based console and PostgreSQL compatibility mode

In-memory graph database tuned for dynamic analytics environments with real-time performance

Redis re-implemented with SQLite for persistent, ACID-compliant key-value storage

Polymorphic database with a conceptual data model, strong type system, and symbolic reasoning engine

Distributed Redis-compatible key-value NoSQL database built on RocksDB for cost-effective persistent storage

Distributed SQL database for real-time analytics on massive datasets with PostgreSQL compatibility

Lightweight distributed SQLite with Raft consensus for fault-tolerant edge and IoT deployments

Lightweight, fast key-value database written in pure Dart for Flutter apps

Fast open-source vector search and clustering engine for C++, Python, JavaScript, and 10+ languages

Cloud-native storage engine for PostgreSQL eliminating bloat, vacuum, and wraparound problems

Transactional relational-graph-vector database using Datalog for query — the hippocampus for AI

Extremely fast, fully async NoSQL database for Flutter with powerful queries and full-text search