Javascript

RxJS is a general-purpose library for functional-reactive programming. State management just happens to be a natural fit due to its extremely powerful operators.

CaptainCasa is the fastest way to build web applications in Java. Always free of charge; very powerful; even with many dialog elements still fast in contrast to vaadin.

Loads fast enough, provides great user experience and loads of integrations.

I'm using it with React + Tailwind. It makes the app very fast to start and reload (specially with JIT mode in tailwind). We had a project react/taiwind (and many other librairies like redux and such) using CRACO, wich was pretty slow to start. Like 20 secondes for some people (one of us could have to w...

Free/libre software and it does it work, quickly.

Free for Open-Source projects and for personal use.

Amazing syntax declaration for your schema with client and migration tool.

Very good, however, some things (like HTML tags) are hard to do

One of the best thing I have ever worked with. It is super easy to learn if you are familiar with Javascript.

Speed up, slow down, advance and rewind HTML5 audio/video with shortcuts.