The best chair I ever used was a kneeling chair. It encourages proper posture in a way that no other chair I've seen does.
Beware, there's a huge spectrum of quality for this (or any other) type of chair. Kneeling chairs were also some of the worst chairs I've ever sat on. "Kneeling" is one feature which chair designers can use to make a great chair, but it's not a magic feature that makes any chair design great.
Beware, there's a huge spectrum of quality for this (or any other) type of chair. Kneeling chairs were also some of the worst chairs I've ever sat on. "Kneeling" is one feature which chair designers can use to make a great chair, but it's not a magic feature that makes any chair design great.