Ask HN: If you were to build a CRM today what would your stack be?

In terms of learning new things, trusting that it's secure production ready, and bootstrapping when possible. React seems interesting, but it requires a lot more additional components as you only seem to get the view. I've used RoR before but for something like this performance could be an issue. The good thing with rails though it has basically everything needed with plenty of scaffolding. Angular is a monster and that at least would give the entire MVC but seems to be on the decline and is not a friendly framework.

I've had other posts where I'm trying to find a good CRM, and have come to the conclusion that some will get me close but ideally building a bespoke version would give me full control and be able to add whatever features I want without arbitrary limits. Additionally, since it's a larger undertaking compared to previous projects a lot of experience could come from it.