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
< Commentaires sur Webcomic Reader
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.