phpMyAdmin - Open Source Tools for System Administrators
phpMyAdmin can manage MySQL databases in a web browser interface. Written in PHP, the software allows global database or subset searches using custom queries that can be created with Query-by-example (QBE). phpMyAdmin can create and drop databases; create, drop and alter tables; delete, edit and add fields; and execute SQL statements. Data import formats include CSV and SQL, while data can be exported to CSV, SQL, XML, PDF, OpenDoc, as well as to DOC, Excel and LATEX. There is also a function to save the database layout as a PDF file.
Supported OS: Cross-platform, runs in browsers