I use Letterboxd which then feeds into Almanac via RSS to track what movies I've watched.

Letterboxd #

I like the social aspect of Letterboxd and it's a nice website to use. I also maintain a few lists including:

Marvel Cinematic Universe Viewing Order #

There's some debate about what the "correct" order is for watching the Marvel Cinematic Universe movies (and now TV shows).

I don't think watching in chronological order makes sense if you've never seen them before. You lose a lot of the joy of the reveals (like Fury and Coulson in Captain Marvel) and the after credits scenes need to be skipped in order to avoid spoilers.