WeCanTrack vs WhereParcel

WeCanTrack is an affiliate-marketing attribution service whose Public Clickout API rewrites an outbound affiliate link with a tracking sub-ID before redirecting the shopper, letting merchants tie clicks back to conversions across 450+ affiliate networks. Every call carries a per-account API key (via header or query string), and the public clickout endpoint is IP-throttled to 30 requests/minute to keep redirect latency low. There's no ongoing free tier — plans start at $69/month after a 15-day trial.

WhereParcel is a unified parcel-tracking API that normalizes shipment status across 64+ carriers — including USPS, UPS, FedEx, DHL, and TNT — behind a single REST endpoint and webhook system, so integrators don't need a separate connector per carrier. Every request is authenticated with a Bearer API key and answered with full CORS support for browser-side calls, typically in 500ms for cached lookups and 2-3 seconds for live carrier queries. There's no free-forever tier: plans start at $49/month for 10,000 requests, each with a 7-day free trial.