We didn't think about signup being a barrier, I'll bring this up in our next sprint at the possibility of removing signup / signin altogether. Thank you for the feedback!
I clicked on the PostgreSQL and Elasticsearch buttons a few times, the page seemed to flash for a second and then... nothing.
But as [lifekaizen explained](https://news.ycombinator.com/item?id=24569307), no signup with then the option to save when signing in would be even better.