zoho.com
In short: Zoho Marketplace (zoho.com) accepts public zoho extension listing. It is free + paid tier to submit, takes a moderate amount of preparation, and scores 63/100 on our impact ranking (useful).
Build and test an your tool Zoho extension, then submit its public listing.
Requires a functional Sigma extension, privacy/terms URLs, assets, testing, and review.
Priority is medium, which sets the band. It is free + paid tier and moderate to complete, which adjusts it within that band. The score ranks your queue — it is not a measure of domain authority.