Obook plug-in is an add-on to Opera Browser 8.x-9.x. Analogue to Scrapbook for Firefox. You may access and manage your saved web-pages from Opera sidebar. With OBook you may easily save web-pages with all their content - images, scripts, css - manage saved pages and organize them in a tree-like structure. Obook plugin is capable to performing filtered search. You may export and import your saved pages and folders between different OBook bases. And no duplicated pages are loaded again while doing it. You may edit a required page with any HTML-editor or open it in any required application, and view files that belong to the web-page. As well as to visit the online version of the page you selected with a click.