The Galileo mission is a joint effort of NASA and ESA to explore the Jovian system by in-situ measurements. Galileo is the first man-made spacecraft that is in orbit around an outer planet in our solar system. All the other 5 spacecraft (Pioneer 10 and 11, Voyager 1 and 2, and Ulysses) only flew by the planet and encountered the Jovian magnetosphere only for a few days. Galileo, instead, went into orbit around the largest planet in our solar system in December 1995 and is returning data since then.
GALILEO Mission description at National Space Science Data Center (NSSDC) containing a complex linklist to general information and data archives.
GALILEO magnetic field data (Plot books DVD) provided through the Planetary Data System (PDS).
GALILEO - PWS (Plasma Wave Science) Instrument homepage including several link-sets to collected data.
GALILEO Energetic Particles Detector (EPD) data.