Lua Explorador is MUI based source level debugger for
Lua programs. Highly integrated port of the Lua language, featuring dynamic modules as shared libraries and ARexx ports support is included in MorphOS. Lua Explorador allows for single step execution, breakpoints, displays local and global variables, Lua stack and call history. Just released version 0.4 has improved code viewer with tabulator support, breakpoints, autoscrolling to executed line and some minor bugfixes.
http://morphos-files.net/find.php?n&find=lua%20explorador