Very well categorized. Equipped with advanced search engines.

鸠摩搜索引擎

影子图书馆搜索引擎：书籍、论文、漫画、杂志。 ⭐️ Z-Library、Library Genesis、Sci-Hub。 ⚙️ 通过开源代码和数据完全容灾。 ❤️ 广而告之：这里欢迎每一个人！

PDF Drive is your search engine for PDF files.

Easy and fast book searcher, create and search your private library.