The bottle they need in twenty minutes is either on your shelf or somebody else's.

Liquor has more purpose-built POS systems than any other independent vertical in our research — 57 systems in use at US liquor stores, from Windows registers that have run the same counter for fifteen years to cloud systems built for the category in the last five. Here is the list, and where Zachcart stands with each.

Liquor is the vertical where the register is most likely to already carry some online plumbing — and where it most often stops short. Five of the 57 systems are already connected to Zachcart (Bottle POS, mPower Beverage, POS Nation, Clover and NCR Counterpoint), and five appear on Google's free local inventory list (Bottle POS, Spirits POS, Clover, pcAmerica and RMH). A handful report their own DoorDash or Uber Eats connections: Bottle POS, POS Nation, NRS POS, Modisoft, FTx POS and AdvEnt POS. That is more native coverage than pet or grocery, but it comes one channel at a time, each with its own catalog and its own stale-count problem. Fifteen of the 57 systems have no public documentation of how they run at all, which usually means a local installer and a SQL database — the kind of system our remote connector was built for. Whichever row you're in, one connection carries the same live count to every channel, and an allocated bottle that sells at 6:41pm is off every feed by 6:42.