Greasy Fork is available in English.
Support for over 70 sites! Loads manga chapter into one page in a long strip format, supports switching chapters, minimal script with no dependencies, easy to implement new sites, loads quickly and works on mobile devices through bookmarklet
mangafox is broken
Mangafox.me has changed its domain to mangafox.la. As of right now, I couldn't make it work even after editing the script manually.