Not for profit. They accept donations on an 'as needed' basis, and run no ads.
.fun
New non-profit mirror created by original creator of Library Genesis who lost direct control of the project as a result of disagreements over profiteering.
They are are currently collecting donations and do not have ads.
.li .gs .vg .pm
Operates using AdWords and donations. They collect donations all year.
The ads they use links you to pretty suspicious adware type software installs, but the site itself is safe.
Has a marginally larger database then the main domains as they add their own books.
(any other domains aside from these are run by unknown people mostly for profit)
If some domains die or change in the future you can tell us at
There's also Anna's Archive, which I use primarily, since it provides downloads not just from their own db, but links to Libgen and other places where the given book is available.