Sleazy Fork is available in English.
Shows just fullsize Image with hotkeys & without pop-ups on many image-hosting sites
added
fixed
Broken again: http://wwv.imgcredit.xyz/image/emy2q
The wwv bit is not a mistake. I've never seen that before, wwv works for some reason.
added
Add: imgcredit.xyz
http://imgcredit.xyz/img-56557a0342cf9.html