There were a few web-based entries in the Indigo New Language Speed-IF.  Here's where to find them:

The Blue Death, by Otto Grimwald:
PDFs of English/French versions included in this zip.  Online at:
http://anamnese.online.fr/site2/textallion/showcase/the_blue_death/

The Cavity of Time, by Sam Kabo Ashwell
Undum file hierarchy included in this zip.  On line at:
http://diden.net/~maga/undum/idmillington-undum-2cd8eac/games/cavity.en.html

The Matter of the Monster, by Andrew Plotkin:
Undum file hierarchy included in this zip.  On line at:
http://eblong.com/zarf/zweb/matter/

The Price, by Christopher Conley, is not online, but the files are included in this zip.