I'm a big sucker for lists and databases, and my recent discovery of Adventure Lookup is squarely in that wheelhouse. It is, in essence, a big list of adventures for the various versions of Dungeons & Dragons - from the Basic set to 5th Edition, with options for Pathfinder, Dungeon Crawl Classics, and various OSR rulesets. But not only is it possible to filter the list by system, but by player level, setting, publisher - even by what treasure is included or what kinds of monsters there are to fight.
Once an adventure is located, most entries will have some kind of indication of where it can currently be obtained - often a direct link to DriveThru or some other host (However, many that were originally from Dungeon magazine just have the issue number, and only a couple include a link to the Internet Archive Dungeon collection). After that, well, it's all up the the DM . . .