A premium account gives you access to the most advanced functionality on RANDOM.ORG. See below for details.
In addition, the Third-Party Draw Service is available on a per-agreement basis but not yet part of the standard premium package.
The highly flexible Premium Generator can generate unique or repeating numbers from large intervals and display them in different bases. It can email the numbers to people and also remember the last 10 times you used it, which are useful features if you need to share the numbers with someone in a different location.
The Set Generator can generate random sets of integers. You can specify how many sets you want and from which interval the set members should be taken. The sets can be numbered and their members sorted as you prefer.