Django Simple Captcha is an extremely simple, yet highly customizable Django application to add captcha images to any Django form. Its features are:

– Very simple to setup and deploy, yet very configurable.

– Can use custom challenges (e.g. random characters, simple maths, dictionary word, etc.)

– Custom generators, noise and filter functions alter the look of the generated image.

– Supports text-to-speech audio output of the challenge text, for improved accessibility.

– AJAX refresh.