Is there any single word for "widely used"?

"Practical" and "useful" have positive meaning. I am looking for a word with neutral meaning as same as "widely used" that uses neutrally (examples):

• Prescription painkillers are more widely used than tobacco, new federal study finds.
• This is a list of British words not widely used in the United States.
• Answer to Polystyrene, one of the most widely used plastics in the world, has the following formula.

Solution 1:

Prevalent - Dictionary.com

widespread; of wide extent or occurrence; in general use or acceptance.

Eg: These days, laptop computers are prevalent on university campuses.