Wedge is a JRPG engine that utilises Shim and TGUI to create a full suite of components for developing games. There is a map editor but this engine does not feature a WYSWIG editor yet. Instead, powerful and simple coding constructs are used to create levels, battles and cut-scenes.
savetool can decompress/recompress your save states for Wedge games for hand editing. Saves will be written as JSON files.