An SSP, (Supply Side Platform), is an online software solution for publishers to manage advertising inventory, both desktop and mobile, to sell and fill it with ads from multiple advertisers in real-time and track revenue they generate.
SSPs helps publishers with solving one of the challenges publishers are facing – to keep their fill rate as high as possible. A fill rate is an important metric that measures a ratio between how many impressions a publisher’s inventory is getting to the total volume of available impressions to claim.
Top Supply Side Platforms
What is an SSP?
A Supply-Side Platform (SSP) is a technology that helps app publishers and mobile inventory owners manage, optimize and sell their ad space programmatically. SSPs connect publishers’ available impressions to a wide range of demand sources — including ad networks, demand-side platforms (DSPs), and programmatic buyers — allowing inventory to be monetized in real time. By automating the auction process and providing intelligent pricing signals, SSPs help publishers maximize revenue while reducing manual overhead.
How an SSP works example
Source: Clearcode
In practical terms, an SSP sits between the publisher’s ad placements and the broader ad tech ecosystem. It receives ad requests from apps or mobile sites, evaluates the value of that inventory using data such as device type, user behavior, location, and engagement signals, and then exposes it to multiple buyers to secure the highest possible bid. This real-time bidding process ensures that impressions are filled quickly and efficiently, with support for a variety of formats — from banners and interstitials to native and rewarded video — making SSPs integral to modern mobile monetization.
In this directory, we’ve aggregated for you the best SSPs.
List of supply-side platforms (SSPs)
The best SSP platforms
Supply-side platforms (SSPs) for mobile devices are specialized systems that help app and mobile publishers manage, optimize, and sell their ad inventory programmatically. SSPs automate the process of offering ad placements to demand sources, enabling publishers to maximize yield from ads shown inside mobile apps and mobile web environments.
SSPs use data such as device type, user behavior, location, and engagement signals to make inventory available to the right buyers at the right time, improving fill rates and revenue for publishers.
These platforms support a variety of mobile ad formats, including banners, interstitials, native ads, rewarded videos, and in-app display formats, enhancing monetization across the mobile ecosystem for both publishers and advertisers.
Traffy
Traffy is a mobile traffic distribution and monetization platform that supports scalable demand delivery across programmatic ecosystems.
Overview:
Within the supply-side ecosystem, Traffy facilitates high-quality traffic flows between publishers, demand partners, and programmatic buyers. The platform emphasizes performance optimization, transparency, and fraud mitigation to ensure inventory meets advertiser expectations. Its analytics-driven infrastructure helps maximize monetization while maintaining campaign integrity.
Services:
- Mobile traffic distribution across global demand channels
- Programmatic integration with DSPs and buying platforms
- Inventory quality controls and fraud prevention
- Performance analytics and revenue optimization
- Creative enablement and campaign support
SSP Advertising Benefits
In the world of programmatic advertising, SSPs help to support publishers and their inventories by selling their space through an ad exchange. DSPs, (Demand Side Platforms), on the other side, find the best ad inventory and the highest bidder wins that space – this could be on a website or inside a mobile app.
The key benefit of SSPs, other than giving publishers more control over their inventory, is that they can achieve a high fill rate, so ad space that could be used isn’t wasted.
In theory, everyone wins in this setup, with advertisers also getting quality inventory for their campaigns.
SSP benefits include:
- Sells ad impressions for the highest price possible
- Connects to a considerable variety of different advertisers
- Publishers can set their prices and have more control over their space
Below we’ve listed the best SSP networks so you can get up and running without hassle.
