MultiTherm is a tool for generating temperature-resistance tables for nonstandard coolant and air temperature sensors for use with the MegaSquirt DIY fuel injection system.
MegaSquirt normally uses GM sensors. Using this tool, any make of sensor which the user finds convenient to mount in their application can be used.
In many ways, MultiTherm is simply a new implementation of EasyTherm for non-Windows platforms, though hopefully it will be usable on Windows as well.
The latest version can be grabbed as a tar file here