
Do you guys know about Open Culture? It's a fantastic resource for free noir films.
This is a collection of thousands of movies in the public domain from around the world, containing works of famous directors like Fritz Lang, Tartovsky and Kurosawa. And it's not just ancient movies, either, as there are recent movies that were shot for the public domain, like a series of short prequels for Blade Runner 2049. If you scroll through this, you'll truly be surprised at some of the legendary directors it contains.
Anyways, they have an entire section dedicated to film noir and it contains several movies that get referenced here all the time (like Detour and Scarlet Street). Finding this website has provided me with a ton of content that I probably would never have gotten around to watching if it wasn't compiled for me.
(I tried to stick within the rules -- I'm not connected to this website, so it's not self-promotion, and it's all legal -- but please delete this post, mods, if I fell on the wrong side of caution.)