Projects / grapcha

grapcha

grapcha is a captcha generator based on Graphviz. It produces diagrams that are big and easy to read by humans but hard to break with bots. A person reads the diagram by starting at the green "diamond" and stopping at the red "square", while ignoring the eventual random padding at the beginning and end for short texts.

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Recent releases

  •  20 Oct 2008 12:05

    Release Notes: Line colors, line style, and line width were added to improve readability. Start and end nodes are colored in green and red, respectively.

    •  03 Oct 2008 20:37

      No changes have been submitted for this release.

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