gDocsBar is a Firefox extension that shows your google documents in the Firefox sidebar. If you are a google docs user you will love this add-on, with this installed you no longer have to keep the tabs open.
After installing the extension, login to you Google Docs account, don’t worry your login credentials are sent directly to Google via SSL. You will see all your documents now in tabs arranged as word, spreadsheets and presentations. You can order them by title, date and author. With the search box you can search with name, author or content of the doc.
You can use the drag and drop feature to upload files to your google docs account. Source: Webware