Jrichard again:
Then let's here about why isxwarden was distributed from ismods.com, a domain which carries this whois information:
I'd say the domain name should be fairly obvious. Let me highlight the interesting part:
ismods. I'll assume you don't know what a mod is, so let me include a definition:
n.
  1. The act of modifying or the condition of being modified.
  2. A result of modifying.
  3. A small alteration, adjustment, or limitation.
  4. Biology. Any of the changes in an organism caused by environment or activity and not genetically transmissable to offspring.
  5. Linguistics.
    1. A change undergone by a word that is borrowed from another language.
    2. A phonological change undergone by a word or morpheme when it is used in a construction, as the change of will to 'll in they'll
Which is to say, not stock/vanilla IS stuff.

Edit: A lot of games provide some degree of support for modifications, ex. The Elder Scrolls series. Why shouldn't InnerSpace support customization/extensibility?