eReaders+&+ePubs

Firefox extension http://www.epubread.com/en/
 * ===ePub Readers===

Google Chrome extension https://chrome.google.com/webstore/detail/ghgnmgfdoiplfmhgghbmlphanpfmjble

https://chrome.google.com/webstore/detail/okpfiebkkmjcnodegbbbiellepfhoglm
 * ===Make Your Own ePubs===

Huge repository of free books available for download on a variety of e-reader platforms.
 * ManyBooks