(Backend) Ruby/Rails: Elixir/Phoenix seems to be the next evolutionary step (functional, websockets, parallel, concurrent, fast). It's been awesome so far. (Ba

(Backend) Ruby/Rails: Elixir/Phoenix seems to be the next evolutionary step (functional, websockets, parallel, concurrent, fast). It's been awesome so far. (Backend) Node.js: For extremely rapid prototyping Meteor.js remains superior, for everything else: Elixir. More complex Node applications tend to become fragile, unstable or awkward to read, and I'm (or: 'was') doing node in several flavors for years now. (express services , meteor apps, nw.js desktop stuff, scripting/automatisation, ... everything I can/could think of) (Frontend) Backbone, Angular, React: Ember.js all the way now. It assimilates all the shiny features (web components, shadow'ish DOM, ...) and comes the closest to "developer happiness" imo. From all the SPA-frameworks I've worked with, Ember is the only one that doesn't feel wrong, unneccessary complicated or too DIY'ish. (Database) MySQL, MongoDB: Doing Postgres now more and more, feels good. (Misc) C, C++, Go: I decided to go all-in with Rust for when I want to be close to the metal. But i'm still in the learning phase here.