HeidiSQL ( http://www.heidisql.com/ http://www.heidisql.com/ ) has interesting statistics on its home page: MySQL version usage* MySQL 5.1 44.6% MySQL 5.

HeidiSQL ( http://www.heidisql.com/ http://www.heidisql.com/ ) has interesting statistics on its home page: MySQL version usage* MySQL 5.1 44.6% MySQL 5.0 42.8% MySQL 5.5 5.1% MySQL 4.1 4.2% MySQL 4.0 2.0% MySQL 3.23 0.7% MySQL 6.0 0.3% MySQL 5.4 0.1% MySQL 5.2 0.1% MySQL 5.6 0.0% * Reported by 62028 HeidiSQL users over the last month, which have the statistics feature enabled in their preferences dialog. I have a WAMP distro called WampDeveloper that uses MySQL 5.1 and have had a few emails about why I don't use 5.5... Mostly because MySQL (and PHP) have had a really bad history of having their current "general release" versions of being beta quality. To skip the headaches, you should run 1 major version behind. The stats seem to back this up nicely. There are just about as many people using 5.5 as 4.1. P.S., HeidiSQL is written in Delphi / Pascal and is GPLv2.