Simple data sort

We require an admin panel to input clients details in to display on site, and be able to be sort able. For example: We add a new Client, Add a Name, Add a URL, Add a description, upload an image and have the possibility to Upload a PDF and Word Doc, also check box which categories it should show in, in the admin section. On the web page, a drop down will all the categories which the user can select which clients he wants to see. The Designs of the page are already created, just need an admin section to add new clients and integration onto the [login to view URL] needed more explanation will be given. You will need to show examples of this kind of work.