nostr:npub1l3gpk6vrudg8r67swqlex5alv9ch59s4lw46kk6hekuxe2n3aczsyqvu48 it may be worth looking at InvoiceNinja https://github.com/invoiceninja/invoiceninja
Discussion
nostr:npub1dalxqsc5dkqsg3n86vjev90wvhswlt76dqzqdu5hy6em0clwdlcsh3n75t
Added it to my list, but it might not be the right solution for me as I'm looking more for plain accounting, reports, and check printing than invoices.
I've been refining the text of my original post to be more clear along those lines. ^___^