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 Java ME Macintosh Master System Mega Drive NES Sega Genesis SNES DOS for DOS for Windows for GNU/Linux FOSS
apoplexyNNYNNNNNNNYYNYYY
leapopYYNNNNNNNNNNNYYY
legbopNNNYNNNNNNNNNYYY
lemdopNNNNNNNYNYNNNYYY
lemsopNNNNNNYNNNNNNYYY
NESPrincEdNNNNNNNNYNNNNYNN
pophaleNNNNYNNNNNNNNYYY
PoPMapNNNNNYNNNNNNNNNN
POPMAPNNYNNNNNNNNNYNNN
popyornNNNNNYNNNNNNNYYY
Pr1SnesLevEdNNNNNNNNNNYNNYNY
Pr2LevEdNNNNNNNNNNNYNYNY
PrincedNNYNNNNNNNNNYPNY
Princedit*NNYNNNNNNNNNYNNN
RoomShakerNNYNNNNNNNNNNYNN
RoomShaker IINNNNNNNNNNNYNYNN

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