Images that are freely available, open access resources.

Images that are freely available, open access resources.

At the bottom of this form is an option for "usage rights" - here you can select among the options for freely reusable material with different restrictions (analogous to the Creative Commons licenses).

Images, video, audio - all kinds of free resources are available here.

Public domain audiobooks read by volunteers.

"Over 1 million+ high quality stock images and videos" pixabay.com

Images from the New York Times that are in the Public Domain.

"We are a community of designers and developers pushing more open design processes and improving the user experience and interface design of open source software."

"The best free stock photos & videos shared by talented creators."

Pixabay contains professional stock photographs that are licensed for reuse both commercially and non-commercially.

Thousands of short films in the domains of education, advertising, and industry.

"Images from the collection of the Smithsonian Institution that are in the Public Domain."

Unsplash contains professional stock photographs that are licensed for reuse both commercially and non-commercially.

A listing of items from Wikimedia Commons that are in the Public Domain.

"Find interesting public domain works online."