An open tool that moves the everyday handling of MySQL and MariaDB into a browser: creating databases, importing and exporting, setting up permissions and running statements all happen on a web page, with version 5.2.3 published under GPL-2.0.

A database client for macOS that concentrates on MySQL and MariaDB, continued as a community fork of the classic Sequel Pro. It runs natively on both generations of Mac processors, is free from the App Store, and is published under an MIT style licence.

Adminer is a database administration tool delivered as a single PHP file, covering MySQL, MariaDB, PostgreSQL, SQLite, MS SQL and Oracle, able to export structure and data, and published under a choice of two open source licences.

Mosaico turns scattered sensor logs into a queryable data asset: a Rust daemon plus a Python SDK, open source under Apache-2.0, with support for ROS, ROS 2 and MCAP.

Two decades of attention to a single engine buys a fast editor, a readable execution plan and a schema comparison that writes the change script for you, with a free community build underneath.

A single client that connects to relational and non-relational databases alike, with a browser, a SQL editor and a result pane in one window. Import and export handle spreadsheets and flat files, and visual modelling lets you drag tables and relations into place.

DB Browser for SQLite is an open-source graphical tool for SQLite files: browse and edit records like a spreadsheet, change the schema, run SQL with live results, import and export CSV, and encrypt with SQLCipher.