WHAT IT IS
The EasyImageCaption plugin generates captions from images' TITLE or ALT tags in articles and displays them below (or above) the images.
HOW IT WORKS
Before displaying a website the EasyImageCaption plugin searches the article text for images. It then takes the content of an image's ALT or TITLE tag (depending on your plugin settings) to use it as the image's caption. You may restrict the "captionizing" to certain articles or certain images through the plugin's parameters.
EasyImageCaption requires PHP 5.2+ and Joomla! 1.5+. A version for Joomla 1.6+ is available, too.
Reviews are welcome.
Look at the download page for the version history.