Drifter Finder answers one question at a time: from where I am now, which Jove Observatory and which Drifter doorway is closest? Pick an origin system and the tool ranks both by jumps, so you can decide whether the trip is worth it before you undock. Jove Observatories are listed first because they are what most pilots open this page for — they mark the K-space systems where a Drifter hole can appear.
Each doorway carries the hive it belongs to (Sentinel, Barbican, Vidette, Conflux or Redoubt), its signature, the maximum ship size the hole will pass and the hours it has left before it collapses. The hive filter narrows the list when you are hunting one specific chain, and every result has a waypoint button that sets the destination straight in the client.
Sizes and lifetimes matter more here than in normal wormhole space: a Drifter hole that will not pass your hull, or that expires before you can get back, is not a route — it is a trap. The tool shows both up front so the decision is made on the map rather than on the other side.