While the vast majority of tree testing is done online using dedicated tree-testing software, we can also test on paper (the original medium) or by using quick-and-dirty (and free) methods.

Testing online with commercial tools

As tree testing has matured as a recognized IA technique, online tools have sprung up to meet demand. All of these tools offer advantages over doing a tree test manually, such as:

• Unmoderated testing
  People only need a web browser to participate - anywhere and any time, without us having to be present.
  
  
• Flexible testing options
  As the test administrator, we can customize how the test is run.
  
  
• Automated analysis
  This is the big one. The software records the participants' actions, and automatically summarizes/visualizes the results.
  
  

Here's a list of the commercials tools we know of (listed alphabetically), with some basic information on each: