Open Source Databases

A curated collection of the best free and open source databases and the tools around them, covering relational, document, vector and time series engines plus the clients to work with them.

Elasticsearch

Distributed search and analytics engine and vector database for full text search, logs, metrics, security data and retrieval augmented generation.

Alternative to:

Splunk

The leading distributed search and analytics engine

Stars
78,421
Forks
26,146
Last commit
16 hours ago

Prometheus

A monitoring system that scrapes time series from configured targets, evaluates rules and fires alerts, standard equipment for cloud native operations.

Alternative to:

Datadog

Open source metrics collection, storage, and alerting

Stars
66,820

DBeaver

Cross-platform desktop database tool for developers, administrators and analysts, with SQL editing, data browsing and support for over 100 drivers.

Alternative to:

DataGrip

Free database manager for SQL databases and beyond

Stars
52,224

Milvus

Distributed vector database for AI applications, built to search billions of embeddings with metadata filtering, hybrid queries and hardware acceleration.

Alternative to:

Pinecone

High-performance vector database for GenAI applications

Stars
46,508

drawDB

Browser-based database diagram editor that builds entity relationship models, imports and exports SQL and generates migrations without an account.

Alternative to:

Lucidchart

Design database diagrams and generate SQL scripts instantly

Stars
40,153

TiDB

Distributed SQL database compatible with MySQL 8.0, built for horizontal scale, strong consistency and mixed transactional and analytical workloads.

Alternative to:

Amazon Aurora

Scale-out SQL database for real-time analytics

Stars
40,683

Spacedrive

Cross-device file manager that indexes local disks, clouds and external sources into one searchable library synced directly between your machines.

Alternative to:

ForkLift

Your personal distributed filesystem

Stars
39,317

Qdrant

Alternative to:

Pinecone

Fast, scalable vector database for AI applications

Stars
35,287

Dragonfly

A multi-threaded in-memory data store that speaks the Redis and Memcached protocols, aimed at vertical scaling on modern hardware.

Alternative to:

Amazon ElastiCache

Blazing-fast in-memory data store for modern applications

Stars
31,828

Chat2DB

A cross-platform database client and SQL workspace for over forty databases, with an AI assistant you point at your own model.

Alternative to:

DataGrip

Transform natural language into SQL queries with AI

Stars
28,344

Chroma

An embeddings database for AI applications, with an API of four functions and an in-memory mode that needs no server.

Alternative to:

Pinecone

Open-source vector database for AI search and retrieval

Stars
29,595

InfluxDB

Time series database for real-time events and monitoring, built on Apache Arrow, DataFusion and Parquet for quick queries.

Alternative to:

Amazon Timestream

Purpose-built time series database for real-time systems

Stars
31,786

Turso

In-process SQL database written in Rust, compatible with SQLite and now carrying a Postgres frontend, for embedded workloads.

SQLite-compatible database for scalable multi-tenant applications

Stars
25,071
Forks
1,506
Last commit
14 hours ago

TDengine

Time series database for IoT, connected cars and industrial sensor fleets, built for high cardinality ingestion at terabyte scale.

Alternative to:

Amazon Timestream

Time-series database and historian for industrial data

Stars
25,176

Neon Postgres

Serverless Postgres that separates storage from compute, giving stateless database nodes and branchable data for development teams.

Alternative to:

Amazon Aurora

Serverless Postgres for modern applications

Stars
23,268

Beekeeper Studio

Cross-platform SQL editor and database manager for Linux, Mac and Windows, aimed at developers who want a fast, uncluttered client.

Alternative to:

DataGrip

Modern and intuitive SQL client for multiple databases

Stars
23,803

TimescaleDb

PostgreSQL extension for real-time analytics on time-series and event data, for teams that want speed without leaving Postgres.

Alternative to:

Amazon Timestream

Time-series database built on top of PostgreSQL

Stars
23,766

Ceph

Scalable distributed storage system built around RADOS, with block devices and a gateway, for operators and developers running storage clusters.

Alternative to:

Amazon S3

Scalable open-source distributed storage system

Stars
17,175

VictoriaMetrics

Time series database and Prometheus replacement for teams storing large volumes of metrics without the memory and disk cost.

Alternative to:

Datadog

High-performance time series database for metrics and logs

Stars
17,926

AITable

A visual database and spreadsheet with a full REST API, for teams replacing scattered trackers with one collaborative source of records.

Alternative to:

Coda

Visual database for workflow automation across apps

Stars
15,652

QuestDB

A time-series database on open formats that ingests millions of events per second and keeps years of history queryable in one SQL engine.

Alternative to:

Amazon Timestream

High-performance time-series database for massive data scale

Stars
17,477

Weaviate

A vector database that stores objects and their embeddings together, for teams building semantic search, retrieval-augmented generation and recommendations.

Alternative to:

Pinecone

AI-native vector database for intuitive applications

Stars
16,924

Apache Druid

A real-time analytics database for fast ingestion and sub-second queries, suited to interactive dashboards and high-concurrency operational analytics.

Alternative to:

Azure Data Explorer

Real-time analytics database for sub-second OLAP queries

Stars
14,096

Bytebase

Database governance for teams and AI agents, putting schema change, access control and compliance behind one reviewed workflow.

Alternative to:

DataGrip

Secure and streamline database changes with CI/CD automation

Stars
14,649

OceanBase

A distributed relational database with MySQL compatibility, built for clusters that must scale to petabytes without losing availability.

Alternative to:

Amazon Aurora

High-performance distributed database for all workloads

Stars
10,356

Instant

A realtime database you query from the client, giving app developers auth, permissions, storage, presence and offline caching out of the box.

Alternative to:

Firebase

Realtime client-side database for collaborative apps

Stars
10,561

Grist

A relational spreadsheet that combines spreadsheet flexibility with database structure, for teams organizing data that outgrew a plain sheet.

Alternative to:

Airtable

Flexible spreadsheets with database power

Stars
12,002

FalkorDB

A multi-tenant property graph database for teams building knowledge graphs, agent memory and retrieval on Cypher queries.

Alternative to:

Amazon Neptune

Graph database built on sparse matrices for knowledge graphs and GenAI

Stars
10,497

Orama

A JavaScript search engine that runs wherever JavaScript does, handling full-text, vector, and hybrid queries from a schema you define.

Alternative to:

Pinecone

Full-text & vector search at the edge.

Stars
10,586

Databend

Rust data warehouse combining analytics, vector search and full-text search for enterprise teams running agents on their own data.

Alternative to:

Amazon Redshift

Cloud-native data warehouse for lightning-fast analytics

Stars
9,485

Activeloop

Database for AI that stores raw data and vectors together, aimed at teams building LLM apps and training deep learning models.

Alternative to:

Pinecone

The tensor database for AI data

Stars
9,260

HelixDB

A graph and vector database written in Rust, for developers building AI memory, knowledge graphs and retrieval without stitching several stores together.

Alternative to:

Pinecone

Unify vector search and graph traversals in one database

Stars
6,239

GreptimeDB

A columnar database storing metrics, logs and traces on one engine, for teams running Prometheus, Loki and Elasticsearch side by side.

Alternative to:

Datadog

Unified observability database for metrics, logs, and traces

Stars
6,768

Tabularis

A desktop SQL workspace for PostgreSQL, MySQL and SQLite whose built-in MCP server lets AI agents read schemas and run queries.

Alternative to:

DataGrip

Desktop SQL client with built-in MCP for AI agent access

Stars
5,313

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Open Source Databases

A curated collection of the best free and open source databases and the tools around them, covering relational, document, vector and time series engines plus the clients to work with them.

Elasticsearch

Prometheus

DBeaver

Milvus

drawDB

TiDB

Spacedrive

Qdrant

Dragonfly

Chat2DB

Chroma

InfluxDB

Turso

TDengine

Neon Postgres

Beekeeper Studio

TimescaleDb

Ceph

VictoriaMetrics

AITable

QuestDB

Weaviate

Apache Druid

Bytebase

OceanBase

Instant

Grist

FalkorDB

Orama

Databend

Activeloop

HelixDB

GreptimeDB

Tabularis

Elasticsearch

Prometheus

DBeaver

Milvus

drawDB

TiDB

Spacedrive

Qdrant

Dragonfly

Chat2DB

Chroma

InfluxDB

Turso

TDengine

Neon Postgres

Beekeeper Studio

TimescaleDb

Ceph

VictoriaMetrics

AITable

QuestDB

Weaviate

Apache Druid

Bytebase

OceanBase

Instant

Grist

FalkorDB

Orama

Databend

Activeloop

HelixDB

GreptimeDB

Tabularis

NocoDB