This site offers practice tests, exercises, skill-building courses, and e-books. Users must create a free individual account to access the resources. Materials are available for the NCLEX, as well as other exams: PCAT, MCAT, etc.
A free educational resource for nursing students studying for the NCLEX-RN exam, Nurse.plus provides interactive practice tests with hints and video review of the exam. The Nurse Plus Academy is a member of the National League of Nursing. They do not require registration or run any ads, but they have plans to introduce ads in the future.