This visualization starts from near Earth and the Earth orbiting satellite fleet out to the Moon, then past the Sun-Earth Lagrange point 1 to out beyond the heliopause. This is the long-play version.
There have been few changes since the 2015 Earth-Orbiting Heliophysics Fleet. As of summer 2017, here's a tour of the NASA Heliophysics fleet from the near-Earth satellites out to the Voyagers beyond the heliopause.
The satellite orbits are color coded for their observing program:
Magenta: TIM (Thermosphere, Ionosphere, Mesosphere) observations
Yellow: solar observations and imagery
Cyan: Geospace and magnetosphere
Violet: Heliospheric observations
Hinode: Observes the Sun in multiple wavelengths up to x-rays. SVS page
STEREO-A & STEREO-B: The two STEREO spaceraft orbit the Sun in roughly the same orbit as Earth. There have been some communications problems with STEREO-B since 2014. SVS page
Voyager 1 & Voyager 2: The two Voyager spaceraft orbit originally performed flybys of the outer planets of the solar system but continued to operate. They are now the most distant monitors of the plasma in the space between the stars. SVS page