Sleazy Fork is available in English.
Can work on almost any webcomic/manga page, preloads 5 or more pages ahead (or behind), navigates via ajax for instant-page-change, lets you use the keyboard, remembers your progress, and it's relatively easy to add new sites
Actually it has nothing to do with handling https, it's just that batoto always points to the http version in the next/prev page links, and that counts as a different site for cross-site restrictions and prevents loading the pages via ajax.
Bug Unable to handle https
Can't handle https://bato.to correctly. I assume it is the case for other sites that support https site.