The software you'll need depends on which templates you're downloading.
For our After Effects templates you will need the latest Adobe After Effects software
For our Premiere Pro templates you will need Premiere Pro CC
For our Motion Graphics templates you will need Premiere Pro CC 2017.1
For our Davinci Resolve Macros and Davicni Resolve Templates you will need Black Magic Design Davinci Resolve
For our Final Cut Pro Templates you will need Final Cut Pro 10.4 or newer
For our stock motion graphics, music, and video files, you won't require any specific software. However it is a good idea to have Quicktime installed on your computer just in case.
You can purchase any of the above-mentioned Adobe software apps via Adobe's website. There they have plans starting at $19.99 a month. Alternatively, you can just download a trial of the software app, as this will also provide the functionality you need to use our templates.