Motion Array provides a free plan, where you can sign up and access millions of Assets but only a few of them are able to download in the free plan. In this Free plan, you also have the option to test their Review and Portfolio services trial for 1 month. Motion Array will send free assets on your email regularly and some asset you can download direct from the website. This free plan comes with some restrictions and less edition options as compared to the premium plans and also has limited and free Adobe integration. https://gofortrial.com/service/motion-array-trial