Review on Iconfinder by Edward Henderson

The user interface is very clean as well how it works when you add new items or modify existing ones (not easy).

It has many categories which can be filtered by category/folder but not too much specific features for each type like "icons only" etc., however this could just me being picky since other sites have that feature already! Also they do offer paid options if your budget allows so check out their website before using them because there may also come future plans where additional charges will apply depending upon what option(s) chosen at purchase time.