Non-R Venn Diagrams

Venny
Simple, up to 4-way, downloadable image/text.

Chris Seidel's venn diagram generator
Up to 4-way, not as pretty as Venny, downloadable image/text.

VennMaster
Slightly less intuitive "Generalized venn diagrams" software. Area-proportional.

http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=6116&objectType=File
A MatLab .m file - Draws a venn diagram for two or three sets with proportional areas.

Math of circle intersection areas

DrawVenn
A Web applet to draw Area-proportional circular 2-way and rectangular 3-way venns.

3venn
A web applet to draw Area-proportional circular 3-way venns.

google charts

Venn Diagrams in R

Earl's

Earl's venn diagram Tech note
Code for making two and three-way venns in R.

limma example

limma venn diagrams example

library(limma)
example(vennDiagram)

Mad's

I put Earl's code into a file, slightly tweaked it, and I source it from here whenever I want to make venn diagrams.

#get code
source("U:/mcm/R/utilities/venn.R")

#define some sets
e<-c(1,2,3,4,5)

f<-c(3,4,5,6,7)
g<-c(1,7,8)

# 2 set venn
Venn2(e,f,c("e","f"))

# 2 set venn with title
Venn2t(e,f,c("e","f"),"E and F")

# 3 set venn
Venn3(e,f,g,c("e","f","g"))

# 3 set venn with title
Venn3t(e,f,g,c("e","f","g"),"E, F, and G")

area proportional

http://tolstoy.newcastle.edu.au/R/help/03a/1115.html

4-way (ugly)

4-way venns in R:

http://bioinfo-mite.crb.wsu.edu/Rcode/pmaVenns.pdf

http://bioinfo-mite.crb.wsu.edu/Rcode/Venn.R