Linux alternatives to Sequel Pro? (GUI based sql navigator)

There are a few different options that I know of, depending on the platform you are running it on. You could use the following:

• Linux: Dbeaver
• Windows: HeidiSQL
• Mac: SequelPro

I use phpmyadmin and find it adequate for most purposes, however I use greasemonkey to enhance various aspects. Here are a number of such scripts, you can of course write one on your own.
Another alternative is HeidiSQL. This is a Windows-only ® app but runs pretty well using Wine.
Then there is MySQL Workbench which has been mentioned in other posts. I don't find its query capabilities as fluid as phpmyadmin but generating ERD with it and synchronising with the database is pretty slick.

MySQL Workbench is a great and cross platform tool. The UI might not look as slick as Sequel Pro but the features it provides are good enough.