Streamline icons are the like the gift that keeps giving long after you have paid for them. The diverse library of icons are constantly being updated and added. They are my go-to icons when I am working on any sort of documentation or development project due to their diverse styles and clean style. If you can't find what you are looking find what you are looking for, then you are not looking hard enough. :) I would recommend them, hands down, before looking at alternatives. As professionals, our time is valuable, and I like having access to many icon sets where each set looks like the icons within them belong, yet give me flexibility by providing numerous styles. Review collected by and hosted on G2.com.

I haven't found anything so far and I have been using them for several years. Review collected by and hosted on G2.com.