Marko vs Riot: What are the differences?

Developers describe Marko as "An isomorphic UI framework similar to Vue". Marko is a really fast and lightweight HTML-based templating engine that compiles templates to readable Node.js-compatible JavaScript modules, and it works on the server and in the browser. It supports streaming, async rendering and custom tags. On the other hand, Riot is detailed as "A React-like user interface micro-library". Riot brings custom tags to all browsers. Think React + Polymer but with enjoyable syntax and a small learning curve.

Marko and Riot belong to "Javascript UI Libraries" category of the tech stack.

Some of the features offered by Marko are:

• Extremely fast
• Streaming and async rendering
• Progressive HTML rendering

On the other hand, Riot provides the following key features:

• Absolutely the smallest possible amount of DOM updates and reflows.
• One way data flow: updates and unmounts are propagated downwards from parent to children.
• Expressions are pre-compiled and cached for high performance.

"No JSX" is the primary reason why developers consider Marko over the competitors, whereas "Light weight. Fast. Clear" was stated as the key factor in picking Riot.

Marko and Riot are both open source tools. It seems that Riot with 13.7K GitHub stars and 1.02K forks on GitHub has more adoption than Marko with 9.08K GitHub stars and 565 GitHub forks.