Linked from
The 12 pages that link to Aldol reaction, each with the reason it gives.
AcetoneRelated: Acetone can form an enolate and undergo aldol addition or condensation.
EnolateRelated: The enolate adds to another carbonyl, producing a beta-hydroxy carbonyl compound.
EnolRelated: Enol nucleophiles are the carbon-bond-forming partners in this reaction.
GlyceraldehydeRelated: Glyceraldehyde can participate as a small carbonyl-containing aldose.