gamma.app
In short: Getting listed on Gamma is free, with optional paid upgrades. Plan for about 10 minutes — it is a form plus links and assets you already have.
What they ask for: Create a deck or one-page doc and publish it to the web with links to your site.
Create a deck or one-page doc and publish it to the web with links to your site.
Published pages are public; abuse or spam leads to removal.
Open the submission page on gamma.app and complete its form — that is the "Open submit page" link at the top of this page.
Published pages are public; abuse or spam leads to removal.
Priority sets the band — this one is later. Cost (free + paid tier) and effort (quick) move it within that band, which puts it in the long tail tier. The score orders a submission queue. It is not a measure of the site’s domain authority, traffic or quality.