From CloudModding OoT Wiki
SayakaGL
320px
SayakaGL v0.1.1 showing Kakariko Village
Original author(s) xdaniel
Developer(s) xdaniel
Written in C#
Operating system Windows
Available in English
Type Graphical viewer/editor
License Open source
Website Thread at Z64

SayakaGL is an OpenGL-based level editor for Zelda: Ocarina of Time and Majora's Mask. It is capable of editing ex. room and scene actor placements, waypoint placements and room Display Lists, among other things. The program has been officially discontinued in early 2013 and the source code has been released alongside a final build, v0.2.