DDMF have released their VST/AU plug-in chainer Metaplugin in AAX format (32/64-bit) for use in ProTools 10 and higher.
Metaplugin offers ProTools users a way to load VST plug-ins or Audio Units, either as single instances or by building complex plug-in chains.
Metaplugin comes both as an effect and as an instrument, so that it can be loaded on audio and instrument tracks alike.
Price: $39. The new format is available for free for previous Metaplugin owners.