awesome-sql

MySQL

There is already a whole awesome list just for MySQL

PostgreSQL

There is alread a whole awesome list just for PostgreSQL

Oracle's Free IDE for PL/SQL development and administration of Oracle databases

Free command line interface for Oracle Database

Lightweight frontend for Oracle DB development

Free entry level database to develop and deploy applications

Alexandria PL/SQL Utility Library

Collection of utility packages for PL/SQL

PLSQL-JSON

PL/SQL library to encode/decode JSON

Unit testing framework for PL/SQL

Free SQL Server Database to develop and deploy applications

Integrated environment for developers to design and build database and other business intelligence solutions for MS SQL Server stack

Unit testing framework for SQL Server

MSSqlCLI

A command-line client for SQL Server with auto-completion and syntax highlighting

Instant SQL Formatter

Instant Free and Open-Source T-SQL Formatting (look here for the plugins and whatnot: )

Online SQL formatter

sqruff

A SQL linter and formatter written in Rust that supports various SQL dialects and integrates with VSCode through a plugin

sqlaxe

CLI tool for searching, filtering, formatting, and splitting SQL files. Supports 40+ dialects of SQL

SQLPage

Open-source SQL-only website builder

PixQL

Command-line image processing tool in SQL by @Phildo

Easly test and share database problems and their solutions. Can use different backend DBMS's (MySQL, PostgreSQL, MS SQL Server, Oracle, and SQLite)

A web app for running SQL queries and visualizing the results

ERAlchemy

ERAlchemy generates Entity Relation (ER) diagram from databases

BigBash

Open-source converter that generates a bash one-liner from an SQL Select query, no database necessary

Database migration tool

Source Control for your database

Database migration tool, plain-SQL, and declarative definition supported

PgCLI

Postgres CLI with autocompletion and syntax highlighting

LINQPad is not just for LINQ queries, but any C#/F#/VB expression, statement block or program

SchemaSpy

we will do the best to simplify documentation process of your database

MissionKontrol

Self-hosted admin panel to manage one or more MySQL/PostGRES databases

Free multi-platform database tool for developers, database administrators, analysts and all people who need to work with databases. Supports all popular databases

SQL query optimization and database observability, powered by AI

WhoDB

SQL/NoSQL/Graph/Cache/Object data explorer with AI-powered chat + other useful features

Programming Community Curated Resources for learning SQL

A curated interactive space for aspiring programmers to learn and master their SQL skills

Online coding tutorials and Interview questions