Adminer!

MySQL Workbench is a unified visual tool for database architects, developers, and DBAs. MySQL Workbench provides data modeling, SQL development, and comprehensive administration tools for server configuration, user administration, and much more. MySQL Workbench is available on Windows, Linux and Mac OS.

phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web. Currently it can create and drop databases, create/drop/alter tables, delete/edit/add fields, execute any SQL statement, manage keys on fields.

Sequel Pro is a fast, easy-to-use Mac database management application for working with MySQL databases.

DataGrip is a database IDE from JetBrains that is tailored to suit specific needs of professional SQL developers and DBAs.

Chive is a free, open source, web-based database management tool, designed to bring joy to web developers - with easy administration, super fast UI and state of the art web technologies.

PostgreSQL is an absurdly powerful database, but there's no reason why using it should require an advanced degree in relational theory. Postico provides an easy to use interface, making Postgres more accessible for newcomers and specialists alike. Postico will look familiar to anyone who has used a Mac before. Just connect to a database and begin working with tables and views. Start with the basics and learn about advanced features of PostgreSQL as you go along.

DbNinja is a powerful web-based solution for secure and efficient management of remote MySQL database servers.

Datazenit is a web-based database administration tool. Its abilities go beyond the standard tools of database management, and include data visualizations, an intelligent schema builder and many other features that ease and enhance database management. Datazenit is designed to make databases accessible, safe and easy to use.

Toad for MySQL is a freeware development tool that enables you to quickly and efficiently create and execute queries, automate database object management, and develop SQL code. Toad MySQL provides utilities to compare, extract, and search for objects. The MySQL tool also enables you to record and play back keyboard commands, and transfer data across MySQL databases. The MySQL developer tool increases efficiency by helping you manage projects, import/export data, and administer the database.

Sypex Dumper [saipeks d?mper] is a software product (PHP-script), which can help you create a backup (dump) of a MySQL database, and also restore the database from the backup if needed.

phpLiteAdmin is a web-based SQLite database admin tool written in PHP with support for SQLite2 and SQLite3. Following in the spirit of the flat-file system used by SQLite, phpLiteAdmin consists of a single source file, phpliteadmin.php, that is dropped into a directory on a server and then visited in a browser. There is no installation required. The available operations, feature set, interface, and user experience is comparable to that of phpMyAdmin.

phpPgAdmin is a web-based administration tool for PostgreSQL. It is perfect for PostgreSQL DBAs, newbies, and hosting services.

Web-based cross-platform client for PostgreSQL databases

MySQLDumper is a PHP and Perl based tool for backing up MySQL databases. You can easily dump your data into a backup file and - if needed - restore it. It is especially suited for shared hosting webspaces, where you don't have shell access.

PSequel provides a clean and simple interface for you to perform common PostgreSQL tasks quickly.