A while ago I discovered that my local library offers a large collection of eBook downloads for free. This is great for my Sony Reader (ignoring for the moment that DRM on Linux is painful and also that I really want a Kindle) and it means I’m constantly downloading books from the library. I quite like using the Amazon site for finding books because it offers that “other people also bought…” feature but it then becomes a pain to check if the book exists on the library site (most do not).
The add-on is in no way perfect but feel free to try it out by downloading from here. Go to an Amazon page (e.g. here) and you should see a link appear to the Hampshire Digital Library version of the book if one exists:
Source available on github.