Just in case that this isn't known yet, some links to my tools:

RaftAway (raft removal, extrusion/speed/retraction patching)
https://www.dropbox.com/sh/vbsev07y2...d-WMUM9Ba?dl=0

g2z (G-Code to Z-Code conversion)
https://www.dropbox.com/sh/cgt3evjon...gKgIB5kha?dl=0

ZTool (all the features of RaftAway and g2z plus preview, support removal, fan profile display/export/import, patching of temperatures/offset etc.)
https://www.dropbox.com/sh/91jdv24ta...o0cKEkwOa?dl=0

Profiles for G-Code conversion (basic, mainly meant as starting point)
https://www.dropbox.com/sh/tmv5imtvw...qyVntXdTa?dl=0

All the tools are in Java, should run on any platform that support the Java Runtime (Windows, MacOS, Linux).
There's always a short manual in rich text format (RTF) included as well as Icons for Windows (*.ico) and MacOS (*.icns).

Have fun.