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ProxyChecker - Only software, that downloads free proxy lists from network, and checks them.ProxyChecker - Only software, that downloads free proxy lists from network, and checks them. is a useful and handy utility to keep your PC clock accurate. It can periodically check and synchronize your computer time with a NIST atomic time server, or synchronize time between computers, and can also act as a time serverSfbProxy .NET class library offers an easy way for applications to send data to a host through a proxy server. It supports HTTP Connect, SOCKS4, SOCKS4A or SOCKS5.