commercetools.com
In short: Getting listed on commercetools Connect Marketplace is free of any published submission fee. Plan for about 10 minutes — it is a form plus links and assets you already have.
What they ask for: Package your commercetools Connector and request certification and public Marketplace listing.
Package your commercetools Connector and request certification and public Marketplace listing.
Must be a deployable Connect Connector and pass certification; publication is not a generic URL submission.
Open the submission page on commercetools.com and complete its form — that is the "Open submit page" link at the top of this page.
Must be a deployable Connect Connector and pass certification; publication is not a generic URL submission.
Priority sets the band — this one is medium. Cost (no fee stated) and effort (quick) move it within that band, which puts it in the useful tier. The score orders a submission queue. It is not a measure of the site’s domain authority, traffic or quality.