As a mostly back-end developer, I'm still a fan of Firebase as well for the right projects. I haven't used it since they were acquired but the free tier still

As a mostly back-end developer, I'm still a fan of Firebase as well for the right projects. I haven't used it since they were acquired but the free tier still looks pretty generous. The only downside I really see is once you leave the free tier you're at $25 / month minimum whereas I can run a small backend (or multiple small backends) on a $5 / month box. The difference really adds up if we're talking multiple small projects for multiple years.