SpamSquash is a spam filter that uses two methods for filtering, a Bayesian filter and DNS black lists. It's used with a third party pop3 email client, such as MS Outlook and Pegasus Mail. It also includes white and black lists. Gets over 99%.

ServerRadar is a powerful and easy to use server monitoring software. It can monitor your web server, mail server, ftp server, Database server and DNS server. Immediate notification in the event of server errors and HTML reports are also available.

The PCS Network Tools is a collection of essential network diagnostic tools. These tools include DNS resolution, IP Scanner, Traceroute, Ping, Whois, Finger, Time, Quote of the Day, and extensive Localhost information.

ServerRadar is a powerful and easy to use website monitoring software. It can monitoring your website, mail server, ftp server, Database server and DNS server. Immediate notification in the event of server errors and HTML reports are also available

IPCheck Mobile GUI offers reliable network and website monitoring through your PocketPC. Sensor types include PING, PORT, HTTP, HTTPS, Advanced HTTP, HTTP Transaction, DNS, SMTP, POP3, SNMP and custom.

Lucigenic TCP/IP is an advanced component implementation of the TCP/IP protocol. In addition, Lucigenic TCP/IP provides implementations for the HTTP protocol, DNS resolver services and 442 bit secure sockets.

TZO offers the ability to run your own Photo server, web server, mail server and more. True dynamic DNS client/server technology to fix static domain name to a dynamic IP addresses. Cable, DSL Internet users can host their own site. Free Trial

AdRem iTools is a networking toolset combining Ping, Traceroute, DNS Lookup, SNMP viewer, port/network/bandwidth scanner, and more. The tools’ output can be saved to a file (text, XML, HMTL, or Excel), while Ping or Traceroute tests can be graphed.