If the anime was never completed, Then you're in luck. You can continue the story by reading the completed manga. This list has basically the same rules as a couple of my other ones, includes anime originally based on a manga, no...
If a title seems to be missing or not on Netflix's site feel free to comment the title.
Updated in 15/9/2021
These titles are available to watch on Netflix in the United Kingdom.
Anime found on the Canadian version of Netflix.
List of All Anime Shows/Titles available to watch on Netflix. Specifically catalogued based on availability in India. Updated as frequently as possible.
A complete list of "Netflix Originals" and "Netflix Exclusives" anime streaming on Netflix worldwide. They may or may not get a first-run broadcast on Japanese television.