Here you'll find modding tools, documentation and more for Ocarina of Time and Majora's Mask.
CloudModding is also hosting some mods which can be found here in the Zelda Modding section.
Ocarina of Time and Majora's Mask UI modification made easy. Modify the UI with the click of a button.
Having trouble figuring out what to RBA? Or perhaps you want to make sure that you don't lose something? This is for you.
An almost fully documented list of the OoT save format. The OoT3D list is not as complete.
A whole bunch of information about the RAM in Ocarina of Time.
A whole bunch of information about the RAM in Majora's Mask.
A personal project of mine. It is no longer in development, but the source is available.
This mod will put your puzzle solving skills to the test and makes Master Quest look like child's play.