This very useful question (community wiki) list-of-freely-available-physics-books is
collecting a list of freely available resources that we find out there.
How to make it more organized, without transfer the work to some specific individual ?
How to make it more organized
If it is community wiki, then just actively encourage everyone to edit it -- make sure the post itself prominently says "please edit me to make me better!"
We also support anonymous peer reviewed edits as well: