Yep. Pat Meenan's herculean / ultramarathon support of WebPageTest is a remarkable exception. (Speaking of WPT, after just a cursory glance at this thread on my phone prior to thumbing this comment, it surprisingly hasn't been mentioned yet? shrug)
I just recently got to know WebPageTest. It even has scripting abilities! I'm just surprised why the project didn't enter into mainstream (in the sense that an average test automation guy like me will know).