Make My Windows Application Compatible in Web Browsers without Flash or NPAPI

I have a windows "plugin" that I had developed years ago. It allows users on my website to play games on my website. The plugin uses 2 different technologies to render the emulators to my site: NPAPI or Flash. Either work but both are now obsolete. if you're interested, I'm also looking for someone to make updates to it afterward so there's more opportunity to make money from this. Here's briefly how my plugin works: When the plugin gets installed, it also installs a few emulators. When a user goes to play a game on my site, the plugin loads the game into the appropriate emulator and then renders it on the webpage, making it appear to play on my website. The plugin also communicates with my site in a few various ways, creating local saves based on the user's ID of my site, uploading screenshots that they take with the plugin to my site, etc. I need someone to make the plugin work without NPAPI or Flash. HTML5 is probably the preferred solution but I'm open to anything, as long as the technology supports the ability to render a windows application in the web browser. These are the 2 files located on my server that the plugin uses to display the output on my site: [login to view URL] [login to view URL] And here's a link to the installation of my RGR Plugin: [login to view URL] And when the plugin is installed, this is an example of a page with a game that would play in the browser: [login to view URL] (the plugin still works with an older browser that supports NPAPI; an example of this is firefox version 42 and here's a portable version of that: [login to view URL]) You'll be provided with the full source code of my RGR Plugin, which has plenty of documentation and requires Visual Studio 2008. if you're interested, I'm also looking for someone to make updates to it afterward so there's more opportunity to make money from this.