We shot this picture in July in the Cascades and we can't find a name or identify it from books we have.
White flowers with narrow leaves is a species of stitchwort (Stellaria). Perhaps Stellaria longipes or Stellaria nitens. Not sure about the plant with the broad leaves.
Long-stalked starwort (Stellaria longipes) might be correct whereas Stellaria nitens can be excluded because the sepals should be longer than the petals.