It's close enough that DBOS does support SQLite. [0] The default for prototyping is SQLite, but sure you can run it in production if you wanted.

Obligatory list of workflow engines and libraries because it's such a common need that a lot have rolled their own. [1]

[0] https://docs.dbos.dev/python/tutorials/database-connection

[1] https://github.com/meirwah/awesome-workflow-engines