torch
torch
Prince of Persia: Original Trilogy

All editors are available for free (zero price; gratis).
For libre software, check the "FOSS" column of the table.

(alphabetical) Prince of Persia 1 PoP2 This program is:
Apple II BBC Master DOS Game Boy Color Macintosh Mega Drive NES Sega Genesis SNES DOS for DOS for Windows for GNU/Linux FOSS
apoplexyNNYNNNNNYYNYYY
leapopYYNNNNNNNNNYYY
legbopNNNYNNNNNNNYYY
lemdopNNNNNYNYNNNYYY
NESPrincEdNNNNNNYNNNNYNN
PoPMapNNNNYNNNNNNNNN
POPMAPNNYNNNNNNNYNNN
Pr1SnesLevEdNNNNNNNNYNNYNY
Pr2LevEdNNNNNNNNNYNYNY
PrincedNNYNNNNNNNYPNY
Princedit*NNYNNNNNNNYNNN
RoomShakerNNYNNNNNNNNYNN
RoomShaker IINNNNNNNNNYNYNN

*The first editor ever created, not including Mechner's own editor of which video footage is available.