This site offers lots of vetted, free meditations of varying styles, themes, and lengths. There are a large number of contributors from which to choose. Available as a website and an app. Premium features offered as a subscription-based product.
Aura Health offers, via their site and app, a wellness library of meditations, coaching, and more. They offer a free trial and then it is a subscription-based product. Reviews look very good.
This site/app offers a large number of meditations, music, exercises, and sleep stories. They offer a free trial and then it is a subscription-based product.
This site offers blogs, articles and videos about meditation via founder Andy Rich. There is a free trial, and then it is a subscription-based product. They offer some meditations for kids, too.