Hentai Heroes image viewer
Allows you to display any stage image of any harem girl, owned ones or not. Works also in event display and Places of Power. Includes zoom-in feature to display full-size girl images gallery (lightbox).
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