UCINET may be downloaded and used free for 60 days. This means you can give workshops on UCINET without requiring the students to pay for it (assuming they don't already have an expired version).

Note that the trial version is exactly the same as the purchased version and is in no way limited in its capabilities.

Please note that once you install the program, you can download updates during the 60 days, but you cannot extend the time of the trial period. Similarly, you can't download it again after the 60 days are up.