For me, the best combination of technologies to create any web application is:

Rails ( with its gem ecosystem) + Redis + PostgreSQL + StimulusJs + TailwindCSS.

No need more.

• Rails has everything you need https://rubyonrails.org/everything-you-need/

• Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker.

• PostgreSQL is the World's Most Advanced Open Source Relational Database

• StimulusJs a modest JavaScript framework for the HTML you already have.

• Tailwind CSS a utility-first CSS framework for rapidly building custom designs.

What is yours?