Projects with gifs on reddit get more attention.
Example: https://www.reddit.com/r/unixporn/comments/z0zm8x/oc_nap_a_c...
My strategy has always been to be humble, be kind, respect the subreddit rules, and only promote if you have something actually valuable to share (new features, relevant things). And then only one per month or so.
And, as OC said, posts with screenshots or GIFs do so much better.
Corroborates my experience, that is what I did to successfully get some attention for Lusift (https://github.com/lusift/lusift).
Example: https://old.reddit.com/r/vuejs/comments/wpuohd/i_created_a_j...
turns out most of these repositories have contribution guidelines. you can create a PR on your own.
FWIW I recently started listing these awesome lists to post your OSS project on GitHub. [1]
hope it helps!
[1] https://github.com/fmerian/awesome-developer-first-directori...
I find a lot of tools from their newsletter.
Still fondly remember using the venerable freshmeat website to window shopping online for open source software.