Image 1: LaunchDirectories publishes a catalog of startups and software that founders can still join.
Directories with a public submission form
These sites take a URL through a form rather than a public profile or a guest article.
1010 destinations
N8N publishes a catalog of startups and software that founders can still join.
$1M Solo Business With Alex West publishes a catalog of startups and software that founders can still join.
podcastguests.com publishes a catalog of startups and software that founders can still join.
productcool.com publishes a catalog of startups and software that founders can still join.
Build Winning Products - Hiten Shah publishes a catalog of startups and software that founders can still join.
Generating Product Ideas - Artiom Dashinsky publishes a catalog of startups and software that founders can still join.
Ramen FM publishes a catalog of startups and software that founders can still join.
Ramen Club publishes a catalog of startups and software that founders can still join.
RanksPro publishes a catalog of startups and software that founders can still join.
Make - Pieter Levels publishes a catalog of startups and software that founders can still join.
BUGISTOTO publishes a catalog of startups and software that founders can still join.
Resellerratings publishes a catalog of startups and software that founders can still join.
Revelic publishes a catalog of startups and software that founders can still join.
The SaaS Podcast publishes a catalog of startups and software that founders can still join.
The SaaS Playbook - Rob Walling publishes a catalog of startups and software that founders can still join.
Image 3: facebook sharing button publishes a catalog of startups and software that founders can still join.
sitejabber.com publishes a catalog of startups and software that founders can still join.
SEMrush publishes a catalog of startups and software that founders can still join.
slideshare.net publishes a catalog of startups and software that founders can still join.
spreadtheworld.net publishes a catalog of startups and software that founders can still join.
Stacking The Bricks publishes a catalog of startups and software that founders can still join.
Visit → publishes a catalog of startups and software that founders can still join.
Visit → publishes a catalog of startups and software that founders can still join.
When a submission form is the right door
A form is the usual path for product directories: you send a URL, a short description, and often a logo. Approval is not automatic, and the link can be dofollow or nofollow.