carbonmade.com
In short: Getting listed on Carbonmade is free, with optional paid upgrades. Plan for about 45 minutes — there is material to prepare and a review to wait on.
What they ask for: Build a substantive product-design case study covering your tool system, flows, and outcomes, then add the canonical site through supported navigation or project links.
Build a substantive product-design case study covering your tool system, flows, and outcomes, then add the canonical site through supported navigation or project links.
Payment is required to go live; publish unique portfolio content rather than a duplicate or thin SEO page.
Open the submission page on carbonmade.com and complete its form — that is the "Open submit page" link at the top of this page.
Payment is required to go live; publish unique portfolio content rather than a duplicate or thin SEO page.
Priority sets the band — this one is medium. Cost (free + paid tier) and effort (moderate) 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.