Free films on demand are available without a registered account on YouTube. Crackle also shows free films on demand but requires users to register for a free account.
There are a number of movies available for free viewing on YouTube. Typing "free movies" into the search bar at the top of the homepage of YouTube brings up which films are available. YouTube does not require an account for viewing access.
Crackle offers free on-demand viewing of films with a free registered account. Crackle is easier to navigate and has the films categorized by genre. Both sites have short ads at the beginning of each film. YouTube allows the user to skip the ad after a certain time has elapsed whereas Crackle does not.