Analog waveform formats

Hello,

I am experimenting with IHP 130, and I am trying to set-up the analog simulation flow (XSCHEM + ngspice).

I am searching for tools to nicely view the analog waves (from transient simulation). XSCHEM itself has the ability to do it, but it does not seems to be very reactive. I tried "GAW" and "GWAVE", but its UI/UX is, well terrible.

Would there be interest to add support for analog waves in surfer (e.g. .raw format) ?