A SaaS affiliate program runs in one of three places. On a partner platformlike PartnerStack or Impact, where a neutral third party holds the tracking data and pays you. On a traditional affiliate network like CJ Affiliate, which aggregates advertisers across many industries. Or in-house, on the vendor's own infrastructure.

The practical differences matter more than the branding. PartnerStack consolidates your balance across every program you belong to, which meaningfully lowers the effective payout threshold when you promote several tools. In-house programs usually pay better because there is no platform fee in the middle, but you depend entirely on the vendor's own tracking with no neutral party holding the data.

38 programs in the directory do not publish which platform they run on. Those records show the network as not disclosed rather than guessing.