Hay que tener el historial habilitado para que funcione.

Installed today and it works just fine. No problems.

The extension installs but the icon does not appear in the tool bar, hence, I can't access the tool. I'm using Firefox 63

Thank you so much for this beautiful add-on. Would you consider making it work in Opera ? Thanks again.
Edited 01/11/18 - I noticed that at times the chosen
color doesn't work well with the colors of a particular website. Have you considered adding
a whitelist ? Best regards,

love it, thanks a million :D

Great but doesn't work framed websites (FF60.0.1)
and I want a white list option too.

Works great in Firefox Quantum v60.
I went to tools >>options >>fonts & colors >>colors and selected 'red' as the 'visited link' color..... works great.
Thanks for making something that should be a basic-level function of ANY browser.

Working great in FF60 Beta!

Very good with Unmht,Webpage Editable Switch ( удаляло любой контент),NoScript, Super Start, Tab Groups, EscCloseTab, Print Friendly & PDF, YouTube Video and Audio Downloader,Tab Mix Plus.

Really useful extension. Thanks for that!

Funzt nicht !!

Please add a white list option,because some paticular page doesn't need this function,thx!

Where the heck can I donate to the developer?? So useful little thingy.

The only downside in this version after FF57 came is that there's no option to switch off or list a websites where I don't want to use Visited. Please get that option back and it's 5 stars as before.