Stars Without Number has a lot of adventures. There are free versions of the rules as well:
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Thanks for the link. However, it shows some of the issues I have with finding stuff on Drivethru.
It includes results for Other Dust (ok, technically a version of SWN), Silent Legions (same company as SWN, so maybe understandable) but then also Zweihander, Shadow of the Demon Lord, 7th Sea and Scion, which are completely different genres.
It can also be difficult to tell what are adventures and what aren't. It would be nice if there was an adventure category. on there. As it is, I have no idea how many of these 212 search results are actually adventures - although at least I know from your post that a lot are; if I'd done the search myself I wouldn't even know that much.
And for me, , the things publishers choose to start off their descriptions with can be less than helpful. To pick a random example (I've nothing against the company concerned; I own quite a few of their products, including this one, and I'm very happy with them)
Lurian Trailing Cluster Book 1 said:
The waters of the Deluge have receded. We have survived. Now, we must reclaim our birthright: the stars. The Lurian Trailing Cluster was once a remote frontier, settled by misfits, renegades, and anyone desperate enough for a second chance on a distant world. Now, six centuries after the cataclysmic Deluge wrought untold destruction on civilization, the worlds of the Cluster are …
I'm looking for an adventure for SWN. From the above I am not sure what this product is (I guess a sourcebook, rather than an adventure) or what system it is for (at least it appears to be sci-fi, but unless I am misremembering, SWN has the Scream, not the Deluge). I guess the intention is to write something cool which encourages me to click on the product. It doesn't work for me; since there are 212 results to that search I'm going to click on the ones that actually say "adventure" or "sourcebook" or whatever I'm looking for.