There have been 8 spacecraft that have flown to Jupiter so far.
1 & 2) Pioneer 10 flew past Jupiter in December 1973 and Pioneer 11 in December 1974.
3 & 4) Voyager 1 flew past in March 1979 and Voyager 2 in April of the same year.
5) Ulysses flew around Jupiter in February 1992 on a trajectory to take it over the poles of the Sun.
6) Galileo was the first craft to enter orbit around Jupiter, arriving in December 1995 and lasting until 2003.
7) Cassini-Huygens flew past Jupiter in December 2000 on its way to Saturn.
8) New Horizons flew past in the Spring of 2007. It has now passed Uranus and will fly past Pluto in July 2015.
The Juno spacecraft was launched on August 5, 2011 and is due to enter orbit around Jupiter on July 5, 2016.
They have sent 6 space prbes to Jupiter.
Some of the space probes sent to Jupiter include Voyager 1 and 2, Galileo, Juno, and the upcoming Europa Clipper mission. These probes have provided valuable information about Jupiter's atmosphere, moons, and magnetic field.
Space Probes.
Voyager 1&2, Galileo Space Probe.
Jupiter
Voyager 1 and Voyager 2.
Only the ones we have launched.
Unmanned space probes have been sent to various destinations in our solar system, including Mars, Venus, Mercury, Jupiter, Saturn, Uranus, Neptune, and Pluto. They have also traveled beyond our solar system to study interstellar space.
Robot space probes and telescopes
none with humans although some probes have
into deep space
Jupiter