Next Big What 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
Directory-Free publishes a catalog of startups and software that founders can still join.
Insanely Useful Websites publishes a catalog of startups and software that founders can still join.
LLM Relevance publishes a catalog of startups and software that founders can still join.
Once.tools publishes a catalog of startups and software that founders can still join.
Project Hatch publishes a catalog of startups and software that founders can still join.
Startups of London publishes a catalog of startups and software that founders can still join.
Superbcrew publishes a catalog of startups and software that founders can still join.
ToolHub publishes a catalog of startups and software that founders can still join.
Tools for Makers publishes a catalog of startups and software that founders can still join.
All Startups Info publishes a catalog of startups and software that founders can still join.
App Rater publishes a catalog of startups and software that founders can still join.
Launched! publishes a catalog of startups and software that founders can still join.
Startup Pitch publishes a catalog of startups and software that founders can still join.
AppAgg publishes a catalog of startups and software that founders can still join.
Breakout List publishes a catalog of startups and software that founders can still join.
Fintech News iLounge publishes a catalog of startups and software that founders can still join.
TechBehemoths publishes a catalog of startups and software that founders can still join.
VentureRadar publishes a catalog of startups and software that founders can still join.
FindYourSaaS publishes a catalog of startups and software that founders can still join.
Kyi AI Directory is a catalog of AI products: you can list a tool there, and people browse what already exists.
AI Listing is a catalog of AI products: you can list a tool there, and people browse what already exists.
Amfibi publishes a catalog of startups and software that founders can still join.
Cipinet 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.