LaunchFree.io is a public profile site: you create an account and point it at your website URL.
Startup directories that still take submissions
Aimed at early products and launches.
3 destinations
Backlinks.fyi publishes a catalog of startups and software that founders can still join.
Tarkle publishes a catalog of startups and software that founders can still join.
How startup directories usually work
You send a URL, a one-line pitch, and often a launch date. Some are communities; some are catalogs. Their page decides the rest.