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chromewebstore.google.com
In short: Chrome Web Store (chromewebstore.google.com) accepts extension listing. It is paid to submit, takes only a few minutes, and scores 58/100 on our impact ranking (useful).
Publish useful browser extension linking your tool.
Listing links often nofollow/ugc; value is distribution.
Priority is medium, which sets the band. It is paid and quick to complete, which adjusts it within that band. The score ranks your queue — it is not a measure of domain authority.