I highly suggest those interested in this topic check out the blockdiag group of applications (blockdiag, nwdiag, seqdiag, rackdiag) Its been a year or so since

I highly suggest those interested in this topic check out the blockdiag group of applications (blockdiag, nwdiag, seqdiag, rackdiag) Its been a year or so since I last did an eval of all the options and I keep returning to them. I prefer to have git post-recieve hooks that auto rebuild the images on commit. I liked mermaid but found some major limitations but the brilliantly named python "diagrams" is something I use sometimes as well. With all the font/image improvements you can use on both you can get some very nice stuff going.