Ask HN: Source to Keep Up with New Web Tech

I was wondering if anyone knows of a source that keeps track of all the rapidly emerging libraries (specifically js), web platforms and other fast-moving tech.

Ideally there would be some sort of comparison for similar technologies and/or a short example use-case or summary.

I am a software developer but mostly develop desktop applications and database stuff. I am interested in beginning a few personal web-based projects but am not aware of all the rapidly emerging options within this domain. Thanks in advance!