If you are looking icons for social networks, icons for Facebook or WhatsApp, icons for your applications, or simply icons for your websites or for any project that needs to differ a bit in design, there are plenty of good options on the Internet.
Here we are not going to recommend ultra-known sites such as Iconfinder or Flaticon, which are also not superfluous to always have at hand given their gigantic libraries of free icons, but we have chosen some less famous websites that also offer many quality, interesting resources that are also free to use.
Icons by Icons8 is a Free icon search engine with more than 123,000 files available. There you get icons in PNG and SVG format in 32 different styles. For example, there are icons perfect for iOS or Material style as in Android, or Modern style as in Windows.
You can not only download the ones you want, but also you can edit them adding effects, changing the colors or elements of the layers, the fill, the background, etc. Of course, the maximum free download size is 100px in PNG format.
Visualpharm is a library with thousands of free vector icons, that is you can download the SVG file To scale in high resolution and use as you want in personal or commercial projects, you just have to always give credit to the site with a link where you use the icons.
Orion is an interactive web application from which you can create icon collections using the wide library of packages and designs available.
You can build your collection with over 6000 free icons, you can edit them in the webapp, and then select the ones you want and download them in PNG or SVG format.
In Iconshock you find many themed icon packs that you can download complete and that directly include all the icons in multiple formats: PNG, SVG and AI.
The page is a bit disastrous in the interface and you have to register and scroll for a while until you find the download button, but the icons are of excellent quality and worth it.
Iconmnstr is a small website with almost 4,500 free icons distributed through more than 300 collections. They only have two styles: heavy and light. That is, monochrome icons with very thick or very thin lines.
All the icons are free to use and you can download them in SVG, EPS, PSD or PNG formats.
The Noun Project
In The Noun Project you will find a collection of more than two million icons royalty-free and under creative commons licenses. All were hand-picked by the community behind the web.
You can download the basic version of any of the icons that you find for free, you should only attribute credit to the author where you use them. You can also customize the icons with different colors, backgrounds and rotation, but you will have to pay for a subscription.
Graphic Burger is not a search engine or icon library in the style of the previous ones, it is more like a design site where the author collects free resources. Its icon section has a wide selection of free icon packs that you can use in your projects.