Openlab is a camera capture software for Apple Macs. I don't recommend learning to use Openlab if you are a new user because development of the software stopped in 2010. The software still works on Macs running OSX up to and including version 10.6.8 but not newer versions, so if a computer running Openlab is replaced or if the version of OSX is upgraded then Openlab will stop working. In that situation you would then need to learn how to use another capture software. Any data you have in Openlab format can still be opened and converted into other formats using Fiji and other software.