Starting to work with Radiant, I found out that it is a very powerful CMS. However, it lacks an important administrative feature: file upload. A common requirement for any site admin is to be able to upload files and link for them in the site pages. So, starting to add this feature to Radiant, I thought I should extract it as a generic extension for uploading multiple files easily.
Radiant Upload Manager is an extension for Radiant CMS that enables the admin to upload multiple files at once in a handy way. It is built on the SWFUpload Flash library, enabling selecting multiple files at a time for upload, and preserving the same HTML/CSS interface as the rest of the admin layout.
You can download the extension at its GitHub page. For installation and usage, refer to the README