Here are some of my favorite social media iconsets that are professionally designed, they are available as free downloads and can be used anywhere, including presentations, without restrictions. The collection includes flat icons, circular, long shadows, thin and minimalistic icons with thin edges, and more. Click the proof sheet images for the download links.

long-shadow

Cute Social Media Icons

social-icon-badges

48x48-icons

design-deck

flat-icons

this-social-icons

Screen Shot 2014-06-28 at 2.47.52 PM

circular-social-icons

Find Free Images for your Website

circular-icons

free-modern-social-media-icon-pack-squares

Tip: Use reverse image search in Google to discover similar icon sets on the web.