Harp might be a bit more popular than Polymer. We know about 1 link to it since March 2021 and only 1 link to Polymer. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Lit demonstrates significant growth in web components from the early days of Polymer. This growth is in no small part due to the Lit team themselves, either! - Source: dev.to / about 2 years ago
Sounds like what you want is a static site generator. I've used Harp for a long time but I'm not sure it's really maintained these days, so you might also look at 11ty. Source: over 1 year ago
Vue.js - Reactive Components for Modern Web Interfaces
AngularJS - AngularJS lets you extend HTML vocabulary for your application. The resulting environment is extraordinarily expressive, readable, and quick to develop.
jQuery - The Write Less, Do More, JavaScript Library.
React - A JavaScript library for building user interfaces
Metalsmith - An extremely simple, pluggable static site generator.
Svelte - Cybernetically enhanced web apps