A web hosting space with PHP and MySQL. If you have none, check Piwigo recommended hostings.
- a webserver supporting PHP, like Apache, Lighttpd or Nginx
- MySQL 5
- PHP 5 (5.2 recommended)
- ImageMagick or GD
- 20MB storage for the software, and much more for your photos
- an FTP client like FileZilla
- and, well, a still camera!