Authonomy has 70 free ebooks under a search for Young Adult. All are available for free reading online without registration.
AuthorStand has a nice sized collection of free novels and short stories in its Young Adult section. These are original works by generally unpublished authors. Available for free download in PDF.
Bibliotastic offers 11 free novels in their Teen & Youg Adult Category. These are contemporary works by authors who are generally unpublished and are unique to this site.
BookRix has almost 1000 free ebooks in its Juvenile fiction category. These are available for free download in EPUB or for free reading online.
Booksie has over 13,000 works in its young adult category. These range from short stories to novels and are unique works of unpublished authors. All are available for free reading online or free download in PDF (press "Generate eBook" button).
Classicly has almost 1800 free novels in its Young Adults collection. These are available for free download in PDF or Kindle (AZW).
ClovisNews offers about 100 free classic novels for free reading online (the download links all appear to be dead).
Cory Doctorow offers his novel, Little Brother, for free download in a wide variety of formats.
DigitalBookIndex offers over 500 free classic novels in its various Juvenile & Young Adult Fiction categories. Main link is to the general category. They also have Boys and Girls categories as well as Mystery, Science Fiction and Non-fiction (Teens) that offer differing works.
