You are welcome to test it.
Main feature:
   *multilanguage
   *commandline options with full configuration.
   *set timeouts to discard slow free proxies in running.
   *HTTP GET or HTTP CONNECT method used to validate free http proxy.
   *SOCKS5 connet command is used to validate free socks5 proxy.
   *SOCKS4 connet command is used to validate free socks4 proxy.
   *tunnel through a http proxy with or without basic auth
   *tunnel through a socks5 proxy with or without username/password auth
   *multithread
   *read proxies list from file and output to another file.
   *read proxies from stdin 
   *read proxies list from the web(Testing)
   *read proxies list from the web via myproxy(auto). 
   *full delay information about proxies.
   *checksite,key,user_agent and more can be controlled by user.
   *save data immediately after found. Exit it at run without loss in proxout.
   *print result on screen and save to file in the same time.
   *redirect debug log from stderr to file to see result clearly or not
   *the result on the screen is easy to copy with mouse.
   *read list by line so that big proxylist can be supported.
   *support GNU/Linux,SunOS,OSF1 and more.
   *send nocache header and try to get "true" delay information.
   *check "200 OK" to remove more bad proxies. 
   *option to turn on debug output.
   *protocol:// (such as ftp://) as checksite for HTTP proxy with GET method
   *send customized request to checksite. (For testproxy support tunnel.)
   *port scan, port scan via one or two tunnels. 
   *services detecting

