I have, and like Dillo, Fifth is a great work or programming. But it is kind of an apples-to-oranges thing with me.
It comes down to stability. Fifth is more stable on the RPI than on X86. But the random crashes, no matter how much I fiddle with turning javascript, css, images and the like on and off make it irritating to use because Fifth is really something I like.
However, Dillo - for what it is designed for, seems stable enough across any platform it is compiled on and I can rely on it to work - so much so like a standard unix command! I even threw some coin the authors way to show appreciation, and the hope of seeing ver 3.1 someday.. (throwing coin to TC - if that would not complicate things would be cool too but that's another discussion. )
The problem I have with Fifth is the interdependence on too many parties. The dont-blame-me, blame webkit kind of puts me off. And the dependence on sql-lite and so forth. What may be stable in today's release may become unstable with the next, and the human nature finger-pointing can begin. Plus the whole I love Bieber backwards thing is a red flag that personal politics may take precedence over code. I'm with the author and his mindset, but I can make my own decision without a billboard about it in my face.
Soooo.... I tend to use Dillo for when my browsing is very lightweight, using it for my simple html/css coding for my own purposes, because I know that if it works today, if I compile it tomorrow - it will still do just what it says it will do. If it crashes, it is Dillo's fault, not some other dependency.
I also use browsers for more than the web. I browse my own filesystems, use browsers for image viewing, and with modern browsers even use it as a lightweight notepad
In the url bar: (Just click and start typing if nothing shows. Use file commands like ctrl-f, ctrl-s. Zoom the fonts to the size you like ctrl+ / - etc)
data:text/html, <html contenteditable>
Neither fifth nor dillo allow for this, but shows that I use the browser for many things.
Much like using links / lynx to browse my own filesystems by pointing them at my filesystem rather than the web, ie
lynx .
I hate to appear so harsh about Fifth. I really think it is great, but to me Dillo is something that will probably work 20 years from now, much like our beloved standard unix commands, whereas the relationship between webkit and Fifth may break at any moment, with each party doing the fingerpointing.
I'm cross-platform, so I'm on the lookout for things which are different that kind of throw me off - like fltk-full available on X86, but not for Picore etc etc.
But please don't take this as a criticism of ANY programmer / admin etc. Like OpenBSD, I'm here for the ride and if I don't like it, just shut-up and code!