Microsoft web browsers...
As a web developer, I can honestly say I hate browsers made by Microsoft.
Anyone who remembers spending hours developing a perfectly working website that works in all browsers flawlessly, then completely breaks as soon as it goes into Internet Explorer 6 will most likely agree with me.
IE 7 was supposed to be better.. it wasn't, IE8 was supposed to be better, it really wasn't as everyone else was moving to HTML5 and IE8s HTML5 and CSS3 support was basically not there.
IE9 through 10 seem a little better, IE11 seems to play nice with our code base now however without any major modifications, I think there is just one or two CSS changes for it.
But wow, I still hate Microsoft browsers, I often wondered if they did it on purpose, in an attempt to get developers to make it work on IE, but break it on others?
If they do make a browser which does not require any 'fixes' at all to work within it, I would be genuinely surprised.
Glad to have dropped support for IE6 and 7 now though :-). They became simply unmaintainable and was holding major enhancements and developments back.
Although, IE8 is my current most hated browser.. why? Because I have to support it, yet can only do so for Windows Vista/7 and above version, XPs version won't even connect to the web server as it does not support SSL TLS 1.0 or better, or SNI and Forward Secrecy.
Which is curious to say the least as Vista/7's version connects without issues...
That and it requires a LOT of fixes to make it work with our current HTML5/CSS3 code base..
But I highly doubt MS will release a web browser which requires no workaround(s), no fixes, no changes etc and just works out of the box in my lifetime!
On the good side, I do most development using Firefox Nightly, and when it comes to compatibility testing it is rare for it not to work in Chrome Beta the same way it worked in Firefox, it usually just works the same :-).