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Best Supply Side Platforms in 2026

For publishers, these platforms organize digital ad inventory and connect it to auction and marketplace transactions. The entries below support web, iOS, Android or API use.

  1. 1

    DT FairBid

    Free plan AndroidAPIiPhone+1

    DT FairBid offers both auction-based and ordered waterfall mediation, along with reporting APIs and privacy controls.

    7.5 Free plan Visit site
  2. 2

    Adtelligent

    Paid APIWeb

    Adtelligent covers publisher monetization, advertiser campaigns, video ads, and retail media in one product range. Buyers should request pricing and assess which platform fits their specific workflow.

    5.4 Pricing on request Visit site
  3. 3

    Nexxen DSP

    Paid APIWeb

    Nexxen DSP lists broad channel coverage, varied targeting options, and attribution reporting. Buyers will need to request pricing to assess its cost.

    5.3 Pricing on request Visit site
  4. 4

    Admixer.SSP

    Paid AndroidiPhoneWeb
    4.8 Pricing on request Visit site
  5. 5

    Adform SSP

    Paid Web
    4.7 Pricing on request Visit site
  6. 6

    Media.net

    Paid AndroidiPhoneWeb
    4.6 Pricing on request Visit site
  7. 7

    Cadent Inventory Manager

    Paid Web
    4.5 Pricing on request Visit site
  8. 8

    GumGum

    Paid Web
    4.5 Pricing on request Visit site
  9. 9

    Azerion SSP

    Paid Web
    4.4 Pricing on request Visit site
  10. 10

    Index Exchange

    Paid Web
    4.4 Pricing on request Visit site
  11. 11

    Magnite

    Paid Web
    4.4 Pricing on request Visit site
  12. 12

    Microsoft Retail Media

    Paid Web
    4.3 Pricing on request Visit site
  13. 13

    Publica

    Paid Web
    4.2 Pricing on request Visit site
  14. 14

    Sovrn Ad Exchange

    Paid AndroidiPhoneWeb
    4.2 Pricing on request Visit site
  15. 15

    OpenX

    Paid Web
    4.1 Pricing on request Visit site
  16. 16

    PubMatic

    Paid Web
    4.1 Pricing on request Visit site
  17. 17

    Teads

    Paid Web
    3.9 Pricing on request Visit site
  18. 18

    Triton Digital SSP

    Paid Web
    3.8 Pricing on request Visit site
  19. 19

    Yieldmo

    Paid
    3.6 Pricing on request Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Review free-plan availability, paid starting details, inventory channels, auction types, header bidding, private marketplace deals, ad formats and reporting detail. If you need to read or change code, check the tool's licence and confirm trial or plan terms before choosing.

Questions

How does a supply side platform work?

It is a platform for managing ad inventory and comparing auction, deal, format and reporting options for publisher inventory.

Can I use a supply side platform for free?

At least one listed platform offers a free plan. Check the plan terms and limits before relying on it.

Which platforms do these tools run on?

The listed tools support web, iOS, Android or API environments. Check the supported channel for the tool you are considering.

How is paid pricing shown?

The list compares paid-from details. Several listed tools state that pricing is available on request, so confirm the quote with the provider.

What should I compare besides price?

Review inventory channels, auction types, header bidding, private marketplace deals, ad formats and reporting detail.

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