FireHbbtv extension by Firefox - firefox

I am learning to build a web application for Hbbtv using the Hbbtv SDK.
So for testing a sample app, I was looking for an emulator and came across FireHbbtv Extension by firefox.
However, whatever I do, it says the extension is not compatible with the version of Firefox. can any of you help with what is happening

Firehbbtv extension is abandoned, but you can install it using an old Firefox version (<52 as far I remember). Make sure the automatic updates are disabled if you want to keep the extension available.
There is another HbbTV plugin named hybridTV (https://github.com/karl-rousseau/HybridTvViewer) It works fine, but it is in development.
There is also a third option, using the opera (now called vewd) SDK. You can find the info and the virtual machine downloads visiting
https://www.vewd.com/products-services/vewd-tv-emulator/

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install external chrome extension in mac terminal

I have built some extensions of Google Chrome. I have the CRX files and I kept them my local system which is MAC 10.13. I wish to install my custom build extensions through bash script, purpose is academic only. I have followed the instruction at https://developer.chrome.com/apps/external_extensions. But the extensions are not showing in chrome. Can anybody help?
UPDATE 1
I dont want to host my extensions to chrome web store. If required I can use my web-hosting to store the crx files.
Make sure Chrome is in Developer Mode if you are unable to host your CRX in the Chrome Web Store. Assuming your CRX follow's Google's policies, you might also consider hosting it in the Web Store, and making it private. The latter approach could make it easier to privately share the CRX with your academic peers.

How to launch chrome/chromium browser from win PE?

I'm Looking for a method to launch chrome app from Microsoft Win PE.
Is it chrome supported that feature.
There is no installer for WinPE you need a portable version of a browser. I've tried the portable version of Chrome but couldn't get it to run in WinPE. The only browser I've ever seen work in WinPE is an old portable version of FireFox.
If you want to try to get it to work here's the link
https://portableapps.com
In theory it should work but I can't tell what dependencies it needs as there's no error message. The portable apps are x86 so you have use WinPE_x86.

Is it possible to install different chrome versions on a windows machine?

I need to check a website on different chrome versions and I am trying to do it on the same machine. I don't know if this is still possible now or not. I know it was before from older questions such as here.
So my questions if it is possible how to install different version of chrome on the same computer ?
The only way to do is to use the unofficial !! portable chrome version.
To bypasse this you can use Browserling extention to performe your browser compatibility tests.
You could download an older version of Chromium from:
https://vikyd.github.io/download-chromium-history-version/
They can be installed alongside a regular Chrome.

How to customize rules on Fiddler Alpha on Mono (Mac OS)

Please note: I am working on Mac OS and I am trying to get this to work on the Alpha on Mono version of Fiddler.
More specifically, I want to edit the OnBeforeRequest function in CustomRules.js, so that I can redirect traffic to a development box for testing. Just using the AutoResponder rules is not sufficient.
I've successfully been able to get this to work on Windows. On the Windows build, we can do:
Rules -> Customize Rules (Ctrl+R)
After installing the Alpha Fiddler on my Mac, there's a Fiddler directory with an empty Scripts subdirectory, no SampleRules.js to be found.
I've spent a long time on this and am wondering if it's just a good idea to try finding another way/tool.
Thank you in advance!
Which build of Fiddler for Mono did you install specifically? Version 4.4.5.0 did not include a scripting engine. The later version 4.4.8.4 introduced a new scripting engine (based on C# because JScript.Net is not available on Mono).
I haven't built an OSX installer for the later build yet, but you should be able to just unzip the archive.

How to use npapi plugins in b2g firefox OS

This is my first time on this site. I have a HTML/CSS/JS application. For that application to work, we also have a browser npapi plugin ".so" file that is installed in plugins dir of firefox. This works on firefox browser on Linux. Now I want my application to run on Firefox OS (B2G). How do I port that ".so" plugin to firefox OS?.
What I have done is, I have built B2G and flashed it on my test device. I have built that plugin for android platform by using gecko sdk and firefox OS source. I have pushed my .so file in FFOS phone in /system/lib as well as /system/b2g (the folders where I can see other .so files.). Is that the correct approach? What else do I need to do to make it work. Currently my application is unable to load that plugin ( I checked using ./run-gdb ).
Any pointers would be helpful. I have gone through the documentation on mozilla website and also googled it alot but couldn't find the solution.
Thanks.
You are right, NPAPI is not supported on Firefox OS / B2G.
You do see code for it in the tree (and maybe even in the object directories) because much of the code is actually being used over different products (desktop Firefox, mobile Firefox, Firefox OS, ...).
Mozilla use single gecko engine to support all platform browsers. Those plugins are only used by desktop browsers.

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