Hash (affiliate) URLs and turn them into pages for your blog or simply cache URLs.
Fastest cache system for WordPress Blogs to improve performance and save the World.
Shave off a few milliseconds on your site loading time
Kalimantan is a plugin that integrates Gallery 2 with your WordPress 1.5.
Staticize Reloaded is a plugin to make your site faster by caching the output of some WordPress pages. It creates a unique key based on the page varia
Thesis Cache(r) is designed to integrate WordPress object caching with your thesis theme by giving you page-by-page cache control.
Simple caching for assets (Images, Scripts, styles ...)
Caches multiple users automatically on post and comment pages to radically reduce mysql queries for plugins that get_userdata.
Fragment caching for WordPress themes and plugins
Substantially increase performance of localized WordPress by caching the translation (l10n) object. Supports multiple languages.
Activate your site with client-side caching to maintain access to users even when your server is unavailable.
A plugin Josh wrote a long time ago.