There are a handful out there under the name "request for startups" (popularized by YC, I believe) https://duckduckgo.com/?q=%22request+for+startups%22&t=fpas&

There are a handful out there under the name "request for startups" (popularized by YC, I believe) https://duckduckgo.com/?q=%22request+for+startups%22&t=fpas&ia=web https://duckduckgo.com/?q=%22request+for+startups%22&t=fpas&...