https://github.com/timgit/pg-boss https://github.com/hatchet-dev/hatchet are both on top of Postgres, but I like the SQLite here for a project I have in mind.

Nice to know SQLite will be useful. Just be mindful that SQLite does not work well in highly concurrent systems. So, if you have a single job runner process, it will work wonderfully. However, if you have many workers, then you might see a few issues.