a new kind of ad on websites and forum ?

[Gamezertruth]

Is there an alternative of Tab Mix Plus ?

[Samson]

Is there an alternative of Tab Mix Plus ?

Yes there are, these are not recommedations, I don't use them.

https://addons.mozilla.org/en-US/firefox/collections/topicalsearch/tmp-alternatives/

But, be aware that adding more extensions to Firefox will slow it down and cause possible conflicts. Personally, I think it is best to keep them to a minimum, "Less is more"  ,

Ask yourself, do I really need/ use this extension?

[Gamezertruth]

Is there an alternative of Tab Mix Plus ?

Yes there are, these are not recommedations, I don't use them.

https://addons.mozilla.org/en-US/firefox/collections/topicalsearch/tmp-alternatives/

But, be aware that adding more extensions to Firefox will slow it down and cause possible conflicts. Personally, I think it is best to keep them to a minimum, "Less is more"  ,

Ask yourself, do I really need/ use this extension?

So, I think will I avoid those additions since I got an infection because of stuff like this!
 
I still do have a problem with firefox hang issue Although I have done a complete uninstall for Firefox with your uninstaller software but still having an hang problem !

Edit : screenshot updated