An easy to use open-source, multithreaded Proxy Checker. Allows you to quickly check HTTP and SOCKS proxies in a user friendly GUI, for Windows, Mac OS, Linux.
faiqsohail/ProxyChecker has 192 GitHub stars.
It currently ranks #17857 daily, #18707 weekly, #21557 monthly by momentum on Trending Repos; its best-ever rank is #5574.