A guest post is an article you publish on someone else's website to reach a new audience and earn an editorial backlink to your own site. It's one of the most effective, white-hat ways to build authority, referral traffic, and search rankings — which is exactly why demand for quality guest posts keeps growing.
A guest post marketplace is a platform that connects the two sides of that exchange: content creators and brands who want to buy guest posts on relevant, high-authority sites, and publishers who want to sell guest posts on their own websites. Instead of hours of manual prospecting, cold outreach, and price haggling, a marketplace puts verified opportunities, real metrics, and transparent pricing in one place.
GuestPostOn is the #1 free guest post marketplace. Every one of our guest post listings shows third-party-verified SEO metrics — Domain Authority (DA), Domain Rating (DR), monthly organic Traffic, Backlinks, and Spam Score — re-checked on a 90-day cycle, with ownership verified before a site is listed. That means you evaluate every guest posting site on real data, agree a price directly with the publisher, and pay nothing to browse, filter, or connect.
Filter 1,000+ verified sites by niche, DA, traffic, and price — then contact publishers directly.
List your website free, verify ownership, set your price, and receive proposals from real buyers.
Verified metrics, no middlemen, no hidden fees — full data on every guest post opportunity.
Ready to start? Browse the guest post marketplace to buy, or list your website to sell — and explore the free SEO & marketing tools built for guest posters.