Open source. Open possibilities.

ChartDB is an open-source, web-based database diagram editor that lets you visualize schemas instantly with a single query. No installation or password needed. Supports multiple databases and AI-powered SQL export.

Directus wraps any SQL database with auto-generated REST and GraphQL APIs, a visual management Studio, and a native MCP server for AI agents. It supports granular permissions and self-hosting.

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.

Read-only-by-default Model Context Protocol (MCP) server for Microsoft SQL Server, providing metadata discovery, parameterized SELECT-only queries, execution plan analysis for slow query diagnosis, profile-based multi-connection configuration, and optional per-profile write access, shipped as a .NET NuGet tool.

A large open-source collection of 2624 DevOps and SRE interview questions and hands-on exercises spanning Linux, Kubernetes, Terraform, AWS, Azure, GCP, Docker, Ansible, CI/CD, networking, databases, observability, and more.

SQLFluff is a modular, dialect-flexible SQL linter and auto-formatter that auto-fixes most linting errors and works with Jinja and dbt templating for ELT workflows.

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.

sqlc generates type-safe code from SQL queries, supporting multiple languages via plugins. It compiles SQL to idiomatic code, reducing boilerplate and errors.

AetherGrid is a distributed AI workload orchestrator built with strict Domain-Driven Design, featuring lease-based execution ownership, event-driven reconciliation, API key auth, and a React dashboard.

POCO is a collection of cross-platform C++ class libraries for building network- and internet-based applications across desktop, server, mobile, IoT, and embedded systems.

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

SQLAlchemy is a comprehensive SQL toolkit and Object Relational Mapper (ORM) for Python, providing both a high-level ORM and a low-level Core abstraction layer.

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.

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.

Karma is a modular Go utility library offering prebuilt solutions for authentication, SQL parsing, middleware, third-party API integration (Twilio, OpenAI), and file management to reduce boilerplate in backend development.

A DuckDB compatibility harness for rudb. It verifies conformance through differential execution against a real DuckDB binary, weighted SQL coverage, storage format round trips, and C ABI checks.

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.

TypeScript ORM for Node.js using Data Mapper, Unit of Work, and Identity Map patterns. Supports multiple SQL and NoSQL databases including PostgreSQL, MySQL, MongoDB, and SQLite.