Unsplash - Unsplash is a website with high-quality free HD images. It has a catalog of more than three hundred thousand striking images that are neatly organized with tags. Read more about Unsplash.

Streamline icons - The world’s largest icon pack library - 100k icons and illustrations.

Openverse - Openverse is an Openly Licensed Images and Audio database and a growing community of photographers, illustrators, and musicians who share their work under a Creative Commons license.

Nucleo - Commercial vector icons and accompanying apps to manage and customize them.

Pixabay - Over 270,000 free photos, vectors and art illustrations

Icons8 - Free app for Mac & Windows already containing 39,800 icons. Allows to search and import icons…