Searching for a lightweight PowerPoint presenter

I just noticed on the Microsoft website that “PowerPoint Viewer” has been discontinued and was wondering if there was something I can use as a replacement. We could use the full version of PowerPoint, but it’s just requires a bit to much processing power.

Does anybody know of an alternative lightweight option that can be loaded via the load application action in composer? The client would like to be able to utilize all of the animated transitions that PowerPoint provides and have it launch in presentation mode.

Any help would be appreciated. Thanks!