v1
    Simple XML parser for the 'original' Whatpulse API (as far as I know). Or DPCpulse.nl or something. Obsolete now anyway.
    This is a single file named v1.php


v2
    New parser (and related files) which uses the database, but still interfaces with the original Whatpulse API. Obsolete as well.
    This are the remaining files in this directory, except for v3


v3
    Another new parser (with related files) which does the same as v2, but with the new Whatpulse API.
    These files are in the v3 folder.