Adminer

Adminer (formerly phpMinAdmin) is a minimalist, full-featured database management tool written in PHP, contained within a single file. It is a lightweight, security-focused alternative to phpMyAdmin, supporting MySQL, PostgreSQL, SQLite, MS SQL, Oracle, and others. Its defining characteristic is its tiny footprint and simplicity: the entire application is one PHP file, making deployment and updates trivial. Despite its size, it offers a surprisingly complete set of features for managing databases, tables, columns, indexes, users, and permissions, as well as executing SQL commands and importing/exporting data.

Its interface is clean and fast, with a focus on security and avoiding feature bloat. Adminer is ideal for developers and system administrators who need a simple, secure, and portable web interface for database management, especially in constrained environments or where minimal attack surface is a priority. It is the perfect tool to drop onto a server for occasional maintenance when a full desktop client isn't available.