Adminer

Adminer is a PHP‑based database management tool that runs from a single file, making deployment on a target server straightforward. It connects to a wide range of database systems, including MySQL, MariaDB, PostgreSQL, CockroachDB, SQLite, Microsoft SQL Server, and Oracle, and can be extended through plugins to support Elasticsearch, SimpleDB, MongoDB, Firebird, ClickHouse, and other back‑ends.

The interface allows users to create and select databases, view and modify table structures, manage indexes, foreign keys, triggers, and stored procedures, and perform data operations such as insert, update, delete, and search with sorting and aggregation. It also provides utilities for exporting schemas and data, executing arbitrary SQL, and managing users, permissions, and server processes.

Adminer is distributed under the Apache‑2.0 license, requires PHP 5.3+ (or PHP 7.4+ for source code), and offers multilingual support with 46 language files. It is self‑hostable, free to use without subscription, and can be customized via built‑in and community‑contributed plugins.