Anyone have a list of Doors in sigil?

Well, the Tempest of Doors during the Faction War rearranged all the portals, so everything before that period is out of date for adventures that take place afterwards. Although, some of the portals remain the same - Faction War leaves exactly which ones have changed unclear.

So for a post-Faction War campaign, the only canonical sources for portal locations, really, are Die, Vecna, Die!, the Planar Handbook, Expedition to the Demonweb Pits, Kingdom of the Ghouls, and the 4th edition Dungeon Master's Guide 2 (but the latter two use the 4e cosmology, and some of the portal information in the DMG2 especially might be difficult to integrate into a campaign using the Great Wheel). I don't think any other adventures or supplements are set in post-Faction War Sigil. Oh, there's the 4e Draconomicon 2, which mentions at least one Sigilian portal, though that might possibly be set centuries after the Faction War.

Before the Faction War, there are a bunch of sources mentioning Sigil's portals - the Planewalker's Handbook, most of the adventures, as well as sources like the Planescape: Torment video game.

Just to get things started, For Duty & Deity described a portal in the delivery door of Imel's Happy Tongue leading to the city of Athkatla on Toril. The key was a large gold coin minted by the church of Waukeen.