The 'Attachments' extension for Joomla! allows files to be uploaded and attached to content articles. 'Attachments' includes a plugin to display attachments at the end of articles and a component for uploading and managing attachments. There are options to control who can see the attachments and who can upload them, along with many other options to increase its flexibility and usefulness. To install 'Attachments', unzip the download file and install the two plugins and the component.