HiProxy 

HiProxy is a proxy support utility for the Internet. Shields your IP address for privacy. Easy change browser proxy settings,import proxy lists,verify HTTP/HTTPS/SOCKS proxies,proxy ban list,proxy country,etc.
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CSMail Developer Edition 

Active X Email Components - SMTP (RFC 821), POP3 (RFC 1725) and MIME (RFC 1341) objects. BUILT IN SMTP/POP3/SOCKS PROXY SUPPORT, ESMTP AUTHENTICATION, STANDARD MIME ENCODING/DECODING,SMTP ENVELOPE, FULL SUPPORT FOR MULTIPART MESSAGES.
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Iban 

- Want to know who is or owns an ip address or domain? - Search worldwide for interesting domains. - Hear when a line breaks down/is up. - Know why you can not reach a domain. - Solve internet problems from your desk. - New: Reports printable
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SpoolMyMail 

- Requires no mail server - Check email addresses when you collect them - Send personalized mailings in a matter of minutes - Send emails from your favorite script language - Create emails that international recipients can read
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.::Anonymous Guest - Proxy Checker, SOCKS Manager::. 

Anonymous Guest provides a full spectrum of opportunities to work with proxy servers. You can test proxies on serviceability, determine their type and working speed, work with Internet through a chain of SOCKS4, SOCKS5 or HTTPS proxy servers.
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