We have been using two main websites and apps for Panther Pause - Calm and Insight Timer.
CALM is both an app and a website for you to relax using meditations, nature sounds, and peaceful music. Teachers can get a free subscription for their classes of all the guided meditations or you can sign up for the free version which is still awesome.
INSIGHT TIMER is both an app and a website as well. Insight Timer is the most popular free meditation app in the App Store and has a community of mindfulness practitioners for guided meditations. You can also create your own group within Insight Timer. When you are done with a meditation, the app lets you know how many others were meditating at the same time as you. We really enjoy that feature.