The SQL Sequel
I am not a programmer. However, at some point or another in building most sites, I have to build and test site that require a database connection. I had been using YourSQL to make up for my lacking the programming gene, but that application is dead and doesn't work beyond OS 10.3.
For years, I had to stumble around in user-unfriendly systems like PHPMyAdmin, trying to unravel which table held what table...
... and then I discovered SequelPro. Simple, elegant, clean, it's the SQL client for people like myself who hate to write SQL.