Prince of Persia 1
Modern editor: RoomShaker (Windows)
Another modern editor: apoplexy (Windows and GNU/Linux)
Yet another editor: Princed (DOS)
An old Hungarian editor: POPMAP (DOS)
The first editor* ever created: Princedit (DOS)
Prince of Persia 1 for SNES
Modern editor: Pr1SnesLevEd (Windows)
Prince of Persia 1 for Mac
An old editor: PoPMap (Mac)
Prince of Persia 2
Modern editor: RoomShaker II (Windows)
Another editor: Pr2LevEd
* Not including Mechner's own editor of which video footage is available.