This is a listing of 446 sites that legally offer free books (eBooks) for download or for online viewing.
Some time ago I went looking for some free eBooks and was surprised to find that there are many resources for this. I decided to put together this list of sites that offer free eBooks as a reference. Originally, the list was for 50 sites (hence that number in the link) and I thought that was a lot. I expect that this list will cross 500 sites in the near future. Given the large listing, you may want to check out the various Genre pages that I have put together.
I have tried to make certain that all of the eBooks at these sites are legally available for viewing/downloading. However, it is possible that I have made a mistake. If you suspect any of these sites of illegally offering copyrighted materials, then please let me know through the comments below.