Open source. Open possibilities.

Metabase is an open-source business intelligence and embedded analytics tool designed to allow users to query data and create dashboards without requiring SQL knowledge.

etcd is a distributed, reliable key-value store written in Go that uses the Raft consensus algorithm for highly available replicated logs. It offers a simple gRPC API, TLS security, and is widely used in production for critical distributed system data, notably with Kubernetes.

DBeaver is a free, multi-platform database tool and SQL client for developers, DBAs and analysts, supporting 100+ database drivers via JDBC/ODBC, with SQL editor, data editor, ER diagrams, import/export and AI chat integration.

Supabase is an open-source Postgres development platform combining hosted database, authentication, auto-generated REST/GraphQL and realtime APIs, edge functions, file storage, an AI/vector toolkit, and a dashboard, with official and community client libraries.

Flow is a single-binary, high-performance ETL engine and workflow orchestrator written in Go. It features an embedded visual web builder, declarative XML pipelines, cross-database support, and built-in audit telemetry.

AllSource is an AI-native event store built in Rust, featuring high-throughput ingestion, low-latency reads, and native MCP integration for AI agents. It supports durable event sourcing without Postgres, includes an agent memory engine, and offers community and enterprise editions.

RocksDB is an embeddable, persistent key-value store library from Facebook's Database Engineering Team, designed for fast storage on flash and RAM. It uses an LSM design with multi-threaded compactions and supports terabyte-scale databases.

bytdb is an embedded, pure Go SQL database that is Postgres-compatible, offering a single-file relational store with no external server or cgo dependencies.

MongoDB database repository: source for the mongod database server and mongos sharding router, with documentation for downloading, building, running, mongosh shell, Compass install, client drivers, packaging, bug reporting and community forums.

Microservice crystal structure search using COD data, built with TypeScript, Node.js, Express, React, MongoDB, Redis, RabbitMQ, Docker Swarm, and Traefik for fast substructure queries and a server‑rendered web UI.

PostgREST serves a fully RESTful API from any existing PostgreSQL database. It handles JWT authentication, delegates authorization to database roles, supports schema-based versioning, generates OpenAPI docs, and pushes data validation and JSON serialization into SQL.

dbwidgets provides PySide6 data-aware widgets and dataset components that mirror Delphi's Data Controls. It supports SQLite, PostgreSQL, MySQL, and MariaDB, automatically exposing schema, master‑detail relationships, and editable UI controls such as grids, forms, and navigators.

RisingWave is an event streaming platform designed for agentic AI that integrates ingestion, processing, and serving into a single system.

Zova is a SQLite-backed embedded local database stored in .zova files, supporting relational records, content-addressed objects, exact vector search, and graph relationships, with multi-language bindings, operational safety tools, and optional bound storage for large datasets.

DB Browser for SQLite (DB4S) is an open-source visual tool for creating, designing and editing SQLite-compatible database files. It offers a spreadsheet-like interface, table and index management, record browsing and search, CSV/SQL import-export, SQL query execution and simple graph plotting.

mq-db is a Rust-based embedded database that treats Markdown as a structured, hierarchical store with interval indexing, supporting SQL and mq queries, full-text search, and write‑back editing.

Turso Database is an in-process SQL database written in Rust and compatible with SQLite, adding an experimental PostgreSQL frontend, multi-language bindings, MVCC concurrency, change data capture and vector support.

Source code for the Apache Doris official website (doris.apache.org), built with Docusaurus 3. Hosts multilingual documentation, blog posts, and community guides for Apache Doris, a real-time MPP analytical database.

RxDB is a local-first, reactive NoSQL database for JavaScript apps, running in browsers, Node.js, React Native, Electron and more. It provides a swappable storage layer and a sync engine that replicates with your existing backend via HTTP, GraphQL, CouchDB, WebSocket and other adapters.

SequoiaDB is a distributed document-oriented NoSQL database with a native distributed storage engine that provides full ACID compliance, elastic scalability, high concurrency, and high availability. It stores JSON-based semi-structured data, offers S3-compatible object storage, and enables multi-model processing of structured, semi-structured, and unstructured data.