The Observer is a commercial tool for classifying and logging events. In the video version of the tool, one can create time-aligned annotations of video recordings, using the Event Recorder. The temporal patterning of the observations can be displayed using the time-event plot, and various summary statistics can be generated. The software was developed by Noldus IT and runs on MS Windows platforms.

TLA-team: commercial tool comparable to the functionality of tools such as ELAN, ANVIL etc