1.easyicon网站，免费下载
https://www.easyicon.net/
2.findicons
https://findicons.com/
3.iconarchive
http://www.iconarchive.com/
4.iconseeker
http://www.iconseeker.com/
5.iconfinder
https://www.iconfinder.com/
原文：https://www.cnblogs.com/YorkZhangYang/p/12315351.html