Topic diagram-comm
commutative diagrams
AMS-LaTeX commutative diagrams
AMSTeX Commutative Diagrams for LaTeX
Eplain macros for commutative diagrams
Diagram macros by François Borceux
Commutative diagrams in a LaTeX and TeX documents
Diagram macros by Michael Barr
Drawing macros and fonts for diagrams
A commutative diagram package using LAMSTeX or Xy-pic fonts
Macros for category-theoretic diagrams
Create commutative diagrams with TikZ
Commutative diagrams using XY-pic