admin Font Awesome Duo Tone like Two Tone icons from Google Material Icon Set. Only difference is that this one is free. You can scale it, change the colour, rotate it and if skilled enough, even animate it.
True, but I think Font Awesome have the edge here. Admittedly, it you want access to the premium icons, there is an annual fee (which I pay for my sites). Having compared the two, Font Awesome is a lot more versatile.