Rarst reviewed an interesting networking software today on his excellent blog (you should check it out if you are interested in tech). Internet Maniac is a old school networking software that has not been updated in ten years. Old software does not necessarily have to be bad or outdated especially if it deals with elements that have not changed in the last ten years as well.
Internet Maniac combines a set of networking tools in its interface. The portable software provides access to functions like traceroutes, pings, host lookups, whois information, lookup IPs or domain names and more. Every option is directly accessible from the main interface.
A click on an option will usually display a second window that can be used to enter data, say a domain name for Whois. The same window will also display the results of the function directly in its window.

The tool is completely portable and requires less than 5 Megabytes of computer memory. The homepage of the developer has been deleted a long time ago. You can download the latest available version of Internet Maniac right here at Ghacks (internet maniac).
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Thanks for the shout out, Martin! :)
On Internet Maniac – it does write stuff to registry but only portable purists like me care about that.
Not portable. Creates summitsoft.ini file in %windir%
http://edhel.krasu.ru/node/341 – my analogue of internet maniac (in java)