This is a new experimental tool. Its aim is to make the creation of browser games with Ink easier for non-coders.
You still code your Ink game with Inky or another text editor of your choice. Inkberry just handles the preview of your game, so you can see changes to your story on the fly.
Inkberry should save you the trouble of running a local server, setting up a file watcher that recompiles your story when it changes, refreshing the browser etc.
You can download the binaries here (under “Download”):
https://github.com/Daniel-Wittgenstein/inkberry-app
(You might need to disable security restrictions if you are on Windows or Mac, because the app is not code-signed. I wrote experimental above, because the app has only been tested on Linux, so far.)