Telepathy

Telepathy was the very basic ability to mentally communicate over small or vast distances with other individuals. Every Force user, Jedi or Sith, was able to use it. It is not known if targets of this ability have to be Force-sensitive or not.

Saesee Tiin and Plo Koon were two of the most skilled telepaths in the Jedi order.

Some species such as the Iktotchi or the Kel Dor and many others were able by their species heritage to use telepathy.

Information courtesy of Wookiepedia