SOCKS Proxy Checker is a program for checking proxy servers for activity. That is, you can check if any of the proxies are alive before using them for different purposes. The program checks the lists of SOCKS 4 / SOCKS 5 / HTTPS(CONNECT) proxy servers. It is possible to take lists from text files such as HTML and TXT. Lists are not limited in size. The program is free, the distribution has links to the latest server lists.