I haven't done much development in Ruby on Rails - I've worked with but that's about it. But it's a powerful framework - it's what Mastodon runs on - and widely supported. That's what makes this article important. Normally, you run Ruby on Rails in a web server, somewhere on the internet or in the cloud. Or maybe you run it using your operating system, like Linux or Windows. But this article shows how developers can use something called WebAssembly to run Ruby on Rails in your browser! That means, for example, you could click on a link, and download and run a fully functional interactive application in Chrome or Firefox. But wait - if you think that's impressive, take a look at this: someone reports getting Linux running in a PDF file. As one person comments, "We should definitely run doom inside linux inside PDF."
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