Hi there.
I wrote a small tool to allow for rapid prototyping of rockets before actually building them, as I like to tinker with the components until I get just the dv and accelearation per stage I want. Although I play without mods, I believe this does something similar to KER, but without the need to actually build the rocket.
As the tool was getting more and more useful to me, I thought maybe other people might like it. So I made it public (and FOSS) and uploaded it to gitlab. I would love to get some feedback. It runs on python3 and I tested it under GNU/Linux, but I don't see why it shouldn't run on Windows/Mac.
At its core it consists of a rather intuitive language for speciying staged rockets:
1t + t400 + reliant, 200kg + 2*rocko64 + mainsail
(That's a stage 0 of 1t payload, an FL-T400 liquid fuel+oxigen tank and a LV-T30 Reliant engine, on top of a Stage 1 with 0.2t additional payload, two Rockomax Jumbo tanks and a Mainsail)
It then prints all stats I found useful about the rocket (such as delta-v). There is a comprehensive README with more information, oh and it has auto-complete so you don't have to memorise all component names.
This is what the output looks like for a rocket I built to go to Jool and back again:
Also, I'm new here, btw. Hi to all.