Mobile Multi-Platform Tools

Xamarin vs React Native - YouTube

React Native vs Flutter - YouTube

Xamarin vs React Native: the complete guide

React Native vs Xamarin vs Ionic | 2018

Xamarin vs React Native: 2018 Comparison Guide For Developers | Codementor

Web Development Trends 2019: +GraphQL

Top 8 Web Development Trends 2019 - YouTube
by by Maximilian Schwarzmüller (udemy classes)

• HTML, CSS, JS, Node.JS
• GraphQL
• Web (SPA) framewords :Vue, Angular, React
• Web Components: Stencil
• Static Web Pages, JAM Stack: JS, APIs, Markdown
• PWA (Progressive Web Apps), Hybrid Mobile Apps (React Native, Ionic, Native Script)
• Serverless: AWS Lambda, Azure Functions, GCP Firebase
• AI / Bots: APIs

Compared to last year, he has added GraphQL as next big trend.
That may start replacing now standard REST APIs.

What is GraphQL?

What is GraphQL? | Build a Complete App with GraphQL, Node.js, MongoDB and React.js - YouTube

Here is also his comparison of major web frameworks

React.js vs Angular vs Vue - YouTube