NetGalley is a website initially launched in 2008, aimed at the distribution of digital galley proofs of books, some of which have not yet been released. NetGalley was developed as an alternative to the production of paper galleys and has since evolved into a key marketing and publicity platform for publishers and authors. Publishers that offer e-galleys include Hachette, HarperCollins Publishers, Penguin Random House, Simon & Schuster, and many others in the US, the UK, Australia, Canada, France, Germany, and Japan. The site offers electronic galleys to "professional readers" such as booksellers, educators, librarians, media professionals, and reviewers.