Open Upload is described as 'PHP application to create a private / public file download server' and is an app in the File Sharing category. There are seven alternatives to Open Upload for a variety of platforms, including Linux, Online / Web-based, Mac, Windows and Android. The best alternative is Reservo - Image Hosting Script. It's not free, so if you're looking for a free alternative, you could try ZendTo or Hightail. Other great apps like Open Upload are FileZ (Free, Open Source), CF Image Host (Free, Open Source), PaKnPost Pro (Free, Open Source) and safedrop (Freemium).
Reservo is an powerful Image Hosting Script enabling anyone with digital images to upload, manage & share them. Ideal for photographers or agencies. Using the SAAS mode, you can also earn money by charging users for paid upgrades.