There is no definitive answer to this question, as there are a variety of free Lightroom software options available for Mac users. However, some of the more popular and well-known free Lightroom software options include Adobe Photoshop, Adobe Illustrator, and Adobe After Effects. If you’re looking for a basic photo editing tool that can be used to create basic photos or videos, then these three programs may be a good option for you. However, if you’re looking for something more advanced or professional, then you may want to consider using one of the more expensive Lightroom software options.