My choose is HeidiSQL...
 
HeidiSQL is a useful and reliable tool designed for web developers using the popular MySQL server, Microsoft SQL databases and PostgreSQL. It enables you to browse and edit data, create and edit tables, views, procedures, triggers and scheduled events. Also, you can export structure and data either to SQL file, clipboard or to other servers. 
 
Some Features : 
Free for everyone, OpenSource since 9 years of active development.
Connect to multiple servers in one window
Connect to servers via commandline
Connect via SSH tunnel, or pass SSL settings
Create and edit tables, views, stored routines, triggers and scheduled events.
Generate nice SQL-exports, compress these afterwards, or put them on the clipboard.
Export from one server/database directly to another server/database
Manage user-privileges
Import text-files
Export table rows as CSV, HTML, XML, SQL, LaTeX, Wiki Markup and PHP Array
Browse and edit table-data using a comfortable grid
Bulk edit tables (move to db, change engine, collation etc.)
Batch-insert ascii or binary files into tables
Write queries with customizable syntax-highlighting and code-completion
Pretty reformat disordered SQL
Monitor and kill client-processes
Find specific text in all tables of all databases of one server
Optimize and repair tables in a batch manner
Launch a parallel mysql.exe command line window using your current connection settings 
 
Download links for portable edition of HeidiSQL :