LibXML
Out of date / discontinued project...The library LibXML was created because I couldn't find something like this. This library now contains just so-caled low-level functions. This means, that library doesn't recognize tree-structure and user, which uses this library has to implement these functions by himself. If someone creates these functions, I'd like to see them :)
Library supports in this version all basic attributes: parameters of tags (and, of course, names), text between tags, ending tags etc. Because I don't have to specification of XML, it's possible, that these items are not compatible with standard (however, any updates from your side are welcomed :)
Download libxml.zip - source codes of library (can be compiled under GCC and/or M$ Visual C++ 5/6)
Documentation (on-line html: english html) - it's also in ZIP package