GoodBarber is an all-in-one, no-code platform for building native iOS and Android apps — plus Progressive Web Apps — without writing a line of code.

Everything is built in, so you create, publish, and run your app from a single back-office:

• Design tools and templates
• Hosting
• CMS (articles, videos, podcasts, agenda, maps)
• User management and members' areas
• Push notifications
• Mobile e-commerce, with 0% commission on in-app sales

Two configurations cover most projects:

• Content Apps — publish and engage an audience (media, creators, communities, education).
• eCommerce Apps — sell on mobile (online stores, restaurants, click & collect, local delivery).

In business since 2011, with apps downloaded every 4 seconds across 152 countries.

I wanted to learn Kubernetes, but the options were either "build a local lab" or pay for expensive classes built around cloud environments. I wanted something you could just open and learn from. So I built a browser-based cluster simulation with lessons to follow along.

It behaves like Kubernetes, but it's just JavaScript under the hood. Enough to run kubectl commands, create resources, and watch their lifecycle play out. There's also a live cluster visualizer so you can see your nodes, Pods, and containers in real time.

Once you've covered the concepts, you can jump into CKA drills. Each drill is a standalone, time-boxed scenario that mirrors the real exam format: a broken cluster state, a concrete task, and a pass-or-fail outcome.

The goal isn't to simulate the exam. It's to build the reflex of diagnosing and fixing things quickly, so that when you sit the real exam, the commands and the reasoning are already automatic.