Although there are so many free social icons on the net, it is always good to have another or more of options for social icons especially the free social icons 🙂 as different styled ones can fit better to different websites.
Simple Icons is a set of 96 free social icons that cover almost all of the well-known social services (Twitter, eBay, Facebook, Vimeo, Instagram, Skype, Google+ and much more).
All the items are placed on a different background color that matches the related brand and all looking slick.
Simple Icon free social icons come in 11 different sizes from 16*16px to 4096 to 4096px and in .PNG format and free to use in commercial projects.
Website: http://simpleicons.org/