Kosada uses the same technology that it provides to its customers. We use Drupal for this very site and the collaboration tool, Open Atrium, for all internal document management, accounting, payroll, inventory, task management, and as a general repository for any "loose" data that would otherwise be inefficiently stored in filing cabinets. We customize Drupal modules to meet the needs of new and innovative methods of data storage and manipulation.
Much of the software in the software portfolio was born of our own necessity/interest/tinkering – there's a constant flow between our personal computing projects, internal Kosada software development, and the projects we take on for our clients.
If you want to know about the Drupal features we use... just take a look around!