Minimalistic Icons - Matt Cooper
matt-cooper.com/minimalistic-icons
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Minimalistic Icons are a clean, scalable and editable icon set. They are free for commercial and personal use. The package includes the icon set in Ai, SVG and PNG format. In there is also the license agreement. The icon set is royalty free for personal and commercial use.