Provides single-click plugin upgrades in WP 2.3 and up, visually marks plugins that have update notifications enabled, allows to easily install new pl
Having grown to far exceed it's original aim - to provide easy plugin updates in WordPress - this plugin now deals with various aspects of plugin (and theme) installation and updating. Note that version 2.0 comes with a lot of new features, and, probably, new bugs. The previous version (see the "Other Versions" link to the right) is quite stable though.
Currently this plugin only uses direct file access to update and install plugins/themes, so you'll need to make the "/wp-content/plugins/" and "/wp-content/themes/" folders writable by PHP for this to work. See Changing File Permissions for a general guide on how to do this. Eventually the plugin should use the new filesystem access classes introduced in WP 2.5.
If something doesn't work, you can enable "Debug mode" in Plugins -> Upgrade Settings. This will make the plugin display a detailed execution log when it tries to update or install another plugin.
A note for plugin developers - when performing an upgrade, this plugin will first deactivate the target plugin and call the deactivate hook, if any. Then it will download the new version. If everything goes well, the new version will be then activated (activate hook will be called, if any). This is different from how the built-in updater works - it doesn't call the deactivation hook.
More info - One Click Plugin Updater homepage