Save bandwith with Lazy Load for Joomla! by Viktor Vogel. This free performance extension for Joomla loads only all images of your website, which are situated in the visible area of your website. So this tool is especially helpful, if your website includes a lot of pictures. The configuration is very easy and can be manage directly in Joomla Backend. You can also exclude images, components, URLs or Bots. A nice fading effect makes this plugin to real eyecather. The download is free. Lazy Load for Joomla! works in Joomla 2.5 and Joomla 3.0.

With Mootools Enabler/Disabler, you decide, if Mootools will be loaded on your website, and that saves up to 600 kb bandwidth. Although it is included in the Joomla package, you don't needed in most cases. The installation and handling is very easy. You can add all components, which use Mootools, directly in the plugin manager and disable it for all other. The download is free. Mootools Enabler/Disabler is native to Joomla 2.5 and Joomla 3.0.

FLEXIcontent is a free alternative to Joomla's article manager with more features. It allows you to manage your whole content, like articles, image galleries or video galleries, with one interface. That makes the handling more flexible. You can also create content types and multi-categories or configure up to 10 components at the same time. The download is free. FLEXIcontent is native to Joomla 2.5. It works also in the earlier version, Joomla 1.5.