Above all else, keychain tools must be portable and lightweight, ideally no more than 2.5 ounces. The majority of the keychain tools we write about weigh less than one ounce.

Smaller than your pinkie but with the strength to haul a full-grown adult, this device is a seriously handy powerhouse.

Although most multi-tools fit easily into a pocket, for some people they're still too bulky and obtrusive. Such folks might be interested in the Pathfinder+, as it's a six-function gadget that can ...

All the tools mentioned so far have a similar form factor -- that of a foldable knife or pair of scissors. They can be used as keychains, but most of them aren't exactly subtle in terms of design.

Keychain multitools? Not so much. But think about this: You might use your powder skis a dozen times a year, if you’re lucky, but you'll probably use your keychain tool every day.

Especially in a pinch, having a multi-tool in your everyday carry loadout can be a lifesaver. But many of them, especially those that are full-sized, can also be cumbersome — to the point that you ...

Your key chain takes up the most room in your pocket but is also the least useful thing you carry on a daily basis. But clip the right tools to that key chain and it becomes an indispensable asset ...