Best Free Supply-Side Platforms (SSP) of 2025

FatTail is transforming the advertising landscape by creating innovative sales, operations, and marketplace solutions that empower publishers to take charge of their strategies. Central to our approach is an adaptable Revenue Management Platform designed to enhance monetization, streamline control, and facilitate growth. Rather than forcing you to modify your existing business practices to fit our model, our software is tailored to integrate seamlessly with your current operations, helping you achieve your goals with increased speed, efficiency, and profitability. As a global leader in advertising technology, FatTail offers the only integrated supply platform that combines direct and programmatic capabilities. Our cloud-based solutions grant publishers comprehensive command over media planning, sales, and revenue generation across diverse advertising products and channels, while also providing differentiated “top of the funnel” inventory sourced from the most reputable brands in the industry. This unique approach ensures that our clients can maximize their potential while maintaining the integrity of their established practices.