The Metamorphosis is a novella by Franz Kafka about Gregor Samsa, who wakes up one morning to find he has been transformed into a gigantic bug. Speaking through the door, he argues with his family and his boss, who says he will be fired for not coming to work. Eventually they see Gregor and are horrified. They continue to feed him in his room and, one day after scaring off some lodgers, Gregor realizes he is a burden on the family and dies. The family is relieved and moves on.
Boasting the largest collection of book summaries, BookRags is the best option for titles you can't find elsewhere. They offer all of the basics (quotes, chapter summary, characters, historical context, literary criticism) but also walk through a few major topics that recur throughout the book, which can be particularly useful for essay writing.
The most popular website for book notes. SparkNotes was created by students for students, and their summaries are accessible and extremely well-written. Besides the usual plot overview, chapter summaries, and character analysis, SparkNotes differentiates itself with a section discussing themes, motifs, and symbols.
You won't get any frills with GradeSaver -- just the content you expect. Their study guides include a full plot summary, themes and character analysis, study questions, and the e-text of the book. One hidden gem is their collection of literature essays, but you'll have to pay for it.
If you're bored by traditional book notes, try Shmoop! They write their summaries in an approachable, entertaining style. Their comprehensive offering includes chapter by chapter summaries, themes, quotes, character analysis, study quizzes, and even flash cards and infographics.
Use this website only if you're extremely pressed for time, like the morning of an exam. They offer a very short plot summary and a list of characters and quotes. However, you won't find much analysis or even a chapter summary.