Open source. Open possibilities.

Rainfrog is a lightweight terminal-based database tool with vim-like keybindings, query editor, and cross-platform support for PostgreSQL, MySQL, SQLite, and more.

DSH engineer-level database plugin offering six tools—sql_list/query/exec/schema/stats/health—supporting SQLite, MySQL, and PostgreSQL with multiple connections, featuring read-only whitelisting, write approval gates, lexical read-only protection, streaming row clamping, and configurable timeouts.

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.

SQLModel is a library for interacting with SQL databases in Python, designed to reduce code duplication by combining SQLAlchemy and Pydantic.

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.

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.

TiDB is an open-source, cloud-native distributed SQL database with ACID transactions, horizontal scalability, Raft-based high availability, HTAP via TiKV and TiFlash, MySQL 8.0 compatibility, and vector search support.

Kysely is a type-safe and autocompletion-friendly TypeScript SQL query builder inspired by Knex.js.

A free, browser-based database entity relationship diagram (ERD) editor and SQL generator.

Exposed is a lightweight Kotlin SQL framework and ORM providing a typesafe DSL and DAO API for relational database access, supporting JDBC and R2DBC drivers across multiple database engines.

CloudNativePG is an open-source Kubernetes operator that manages the full lifecycle of PostgreSQL clusters—deployment, failover, replica scaling, rolling updates, and backups—without external HA tools like Patroni or repmgr.

DuckDB is a high-performance, in-process analytical SQL database management system designed for speed, portability, and ease of use.

immudb is an open-source immutable database with built-in cryptographic proof and verification. It supports SQL, key-value, and document models, keeps a tamper-proof history of every change, and speaks the PostgreSQL wire protocol.

Bun is a lightweight, SQL-first ORM for Go that supports PostgreSQL, MySQL, SQLite, MSSQL, and Oracle. It emphasizes type safety, flexible scanning, and complex query building while staying close to raw SQL.

CockroachDB is a cloud-native distributed SQL database built on a transactional, strongly-consistent key-value store. It scales horizontally, survives disk, machine, rack, and datacenter failures, supports ACID transactions, and is PostgreSQL wire-protocol compatible.

A Go-based database migration tool available as both a CLI and a library. It reads migrations from various sources and applies them in order to many supported databases, with lightweight drivers and graceful stop support.

Dapper is a lightweight object mapper for .NET that adds extension methods to ADO.NET connections, offering a simple API for executing SQL with synchronous and asynchronous access, buffered and unbuffered queries, and mapping results to typed or dynamic objects.

Chat2DB Community is a free, cross-platform, local-first database client and SQL workspace from OtterMind. It supports 40+ databases, data management, import/export, dashboards, and a bring-your-own-model AI assistant for SQL, with desktop, web, Docker, and CLI/MCP options.

SeaORM is a powerful relational ORM for building web services in Rust, offering a developer experience inspired by popular ORMs in Ruby, Python, and Node.js.

Aion is a cross-platform, .NET-based SQL client for developers and DBAs. It supports PostgreSQL, SQL Server, and MySQL, offering a modern UI, query history, JSON viewing, and query plan visualization.