All the novels are now in the public domain and have been adapted into several movies and television series.
Anime & Manga
Akage no Anne, a 1979 anime series produced by Nippon Animation as part of their World Masterpiece Theater series.
Film
A series of Hollywood movies in the 1930s were produced, starring an actress who subsequently legally changed her name to Anne Shirley.
Arguably the most famous and popular adaptation is the franchise established by Canadian producer Kevin Sullivan in the mid-1980s, primarily involving a trilogy of two-part movies starring Megan Follows as Anne. Only the first, Anne of Green Gables, is actually a close adaptation of a Montgomery book. The second, Anne of Green Gables: The Sequel (aired in some countries as Anne of Avonlea) was as noted above constructed from various elements of the later Anne novels. The third, Anne of Green Gables: The Continuing Story, which followed more than a decade after the second chapter, was a completely original story set during World War I.
At this point, Sullivan was also deep into production on a long-running and hugely popular TV series. Road to Avonlea transposed characters from one of Montgomery's non-Anne books, The Story Girl and The Golden Road, into the Avonlea setting and mentioned Anne herself in passing. The Continuing Story sparked fandom wrath against Sullivan not only for his decision to create an original story but because that story actually contradicted major continuity points in Road to Avonlea (specifically involving Anne and Gilbert's marriage).
In 2008, Sullivan produced a fourth film, Anne of Green Gables: A New Beginning, which is a combination prequel and sequel to the trilogy of films, featuring Barbara Hershey as a middle-aged Anne during World War II looking back at her life before the events of the first film (with young Anne played by Hannah Endicott-Douglas).
Live-Action Series
CBC began airing another miniseries, Anne, in May 2017. Disconnected from Kevin Sullivan's programs, this instead presents a Darker and Edgier retelling of the first book. Netflix distributes it internationally under the name Anne with an E.
Western Animation
Sullivan has made a cottage industry out of the Anne franchise, as in 2001, he produced Anne of Green Gables: The Animated Series for PBS, which acts as an Alternate Continuity somewhere in the middle of the original novel after the majority of Anne's childhood mishaps have already occurred. The success of the series led to the release of an animated retelling of the original story, Anne: Journey to Green Gables.
