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appsumo.com
In short: AppSumo Partners (appsumo.com) accepts partner/deal listing. It is not stated to submit, takes only a few minutes, and scores 44/100 on our impact ranking (long tail).
Pitch lifetime/free deal if your tool has paid tier later.
Only if monetization/deal exists.
Priority is later, which sets the band. It is not stated and quick to complete, which adjusts it within that band. The score ranks your queue — it is not a measure of domain authority.