Ken Wilber - an overview of sorts (including material compiled from elsewhere). Also see My take on Ken Wilber for a more opinionated look.
Phase 1 - The "Romantic" Period
Phase 2 -
The Pre-Trans Cycle
The Atman Fiasco - a detailed critique of the Atman Project, by Arvan Harvat
Phase 3 - Multiple Development - Holographic Mind
Phase 4 -
All Quadrants All Levels
A Glance at Ken Wilber's "A Brief History of Everything" - review by Arvan Harvat
A Critique of Ken Wilber's "AQAL" Philosophy - Phases 4 and 5
Historical Parallels - Pico della Mirandola, and H.P. Blavatsky - especially Phases 4 and 5
Ken Wilber's Methodology
Ken Wilber, like myself, is a Hedgehog who is trying to formulate a Theory of Everything. Unfortunately, Wilber attacks rather than incorporates the evidence of physical biological evolution, so his evolutionary paradigm cannot be as complete or as reliable as those, like say Erich Jantsch, who are not fazed by the implications of Darwinism.
Ken Wilber's "Two Truths" Monism
Ken Wilber's interpretation of Sri Aurobindo
Ken Wilber's anti-darwinism
Ken Wilber's Methodology - a critique
The Cult of Ken Wilber by Michel Bauwens
Meeting Wilber by anon.
Towards a Larger Definition of the Integral - An Aurobindonian vision and a critique of the Wilberian paradigm my essay in four parts - part 1, part 2, part 3, part 4, on Integral World
Integral Esotericism my essay in eight parts - part 1, part 2, part 3, part 4, part 5, part 6, part 7, and part 8, on Integral World
See also the thoughtful reply (from a quasi-wilberian? perspective) to part 1 of the above essay at Indistinct Union (Chris Dierkes); esoteric integralism pt1, esoteric integralism pt2
Redefining the Integral short essay, at Integral Praxis