Localization

Localization is the ability to localize the position of a being.

Angels

 * Regular angels and archangels - These beings are able to find most beings not protected by enochian sigils. However Eve was able to hide from angels and God can only be found, it he wants to.
 * Reapers - As servants of Death, Reapers are able to find any human, even if they are protected by enochian sigils, evidenced by the fact that Castiel was unable to hide from reapers, despite his enochian sigils.

Demons

 * Lilith - Lilith was able to localize Sam as soon as he destroyed the hex bags.
 * Azazel - Localized Sam shorty before he kidnapped him.

Deities

 * God - God can find any being in existence.

Other

 * Leviathans/ humans (limited) - Leviathans were able gain hints about Sam and Dean's whereabout via complex algorithms, Sam and Dean regulary use technology to localize their enemies.