+ [Z-Library](https://b-ok.org/)
+ [鸠摩](https://www.jiumodiary.com/)
+ [欧叶](http://olevod.com)
+ [Allitebooks](http://www.allitebooks.com)
+ [B-OK](http://b-ok.org/)
+ [Library genesis](http://gen.lib.rus.ec/)
+ [BookSC](http://booksc.org/)
+ [Twirpx -- Ebook Search/Download](https://www.twirpx.com)
+ [Freebookspot -- Pdfs](http://www.freebookspot.es/)
+ [Open Culture](http://www.openculture.com)
+ [Many Books](https://manybooks.net/)
+ [恩京的书房](https://www.enjing.com/)
+ [爱下电子书](https://www.aixdzs.com/)
+ [vol.moe](http://vol.moe/)
+ [书格](https://new.shuge.org/)
+ [Ebook](https://ebook.ipfs-lab.com/)
+ [salttiger](https://salttiger.com/)
+ [ZLibrary](https://b-ok.asia/)
+ [Libgen](http://gen.lib.rus.ec/)
+ [图灵社区](https://www.ituring.com.cn/)
+ [好读](http://www.haodoo.net/)
+ [pdfdrive](https://www.pdfdrive.com/)