SXML-tools
XML is XML Infoset represented as native Scheme data - S-expressions.
Any Scheme programm can manipulate SXML data directly, 
and DOM-like API is not necessary for SXML/Scheme applications.
SXML-tools (former DOMS) is just a set of handy functions which may be convenient
for some popular operations on SXML data.
Software
SourceForge CVS
PLT Collection 
Bigloo package 
maintained by D. Lizorkin