I've found two sources of modern liturgies I hadn't seen before.
Neither makes me jump for joy; the UCC liturgies in particular are rather frosty and the gender-inclusive actions, however well intended, are a bit clunky. (And I detest the New Century Hymnal.
The WCC "Lima Liturgy" of 1982 was ground-breaking, liturgically interesting, but now seems a bit precious.
I think this is the first time they've each been available online.