I am looking for a browser software (like Safari, Firefox, etc...) or a plugin for any known browser that will let me stream whatever is in the browser via DNLA. This because my tv is DNLA capable but is not a smart tv and will not let me install Netflix (or other) players. So my idea is to open Netflix in this browser, start a DNLA stream and go to watch it in the other room.
Any idea on how to do this with no hardware ?

Without hardware i don't know, with hardware, easiest way is with a chromecast from chrome browser.

https://support.google.com/chromecast/answer/3228332?hl=en-GB

Paul.

I tried but Netflix will not work

I use an AppleTV (3), i.e. not the latest one and AirVideoHD (Win or Mac) to play stuff from my Hard drive. iPhone or iPad play to it via Airplay. No idea what Android can do with it however. I think it even has a Netflix channel in the menu. Yep, it does, I just went and checked.

There are many he solutions that allow to install Netflix app.
I need something that streams from a computer Netflix stream to standard dlna