Creative Commons Media 
A curated list of resources that provide media licensed under Creative Commons licenses.
Contributions are very welcome!
Audio
- Audio Archive - Internet Archive's Audio Archive
- Bandcamp - Creative Commons tag on Bandcamp
- ccmixter - Loops and samples that are co-created into tracks.
- free-loops - Loops and audio clips.
- freesound - Collaborative database of sounds, mostly sound effects.
- Free Music Archive - The Free Music Archive offers free downloads under Creative Commons and other licenses.
- Incompetech - Royalty free music from Kevin MacLeod.
- Jamendo - Musical albums. Requires login.
- Tribe of Noise - Musical albums. Requires login.
Graphics
- AllTheFreeStock - curated list of free stock images, graphics and videos.
- Altphotos - Handpicked free (CC0) high-resolution photos added daily.
- Compfight - Searches Flickr for images suitable for blogs, comps, inspiration and research.
- Creativity103 - Library of free abstract backgrounds, textures and design ideas.
- Find A Photo - Search through thousands of free (CC0 licensed) stock photos.
- GameIcons - SVG icons for board and video games.
- Good Free Photos - Thousands of free public domain photos categorized by geographic location
- ImageBase - Collection of free photos.
- Morgue File - Photo collection with license to remix.
- Open Font Library
- Photo Pin - Milions of photos for bloggers and creatives.
- Photos8 - High quality stock photos.
- Pixabay - Photos, cliparts and artwork on CC0 licence. Requires login.
- The Noun Project - High quality icons and images. Requires login.
- Unsplash - Library of high-resolution images.
- WorldImages Kiosk - Library of 75,000 images that students can use in their academic projects.
- Wylio - Image search engine with focus on bloggers. Requires login.
Video
- Mixkit - A gallery of high-quality videos and animation
Open Data
- Geonames - The GeoNames geographical database covers all countries and contains over eight million placenames that are available for download free of charge.
Open Journals
Open courseware
- Candela Learning
- MIT OpenCourseWare
- OpenIntro
- OpenStax College
- P2PU - Peer to peer university - all under CC BY-SA 4.0 license
- Siyavula Open Textbooks
- Skills Commons - Open Career training resources
3d Printing
- Thingiverse - from MakerBot
Misc
- 500px's Creative Commons Search
- Creative Commons' Search
- Europeana - Explore 48,427,731 artworks, artefacts, books, videos and sounds from across Europe.
- Flickr's Creative Commons Search
- Internet Archive
- Jurispedia - The shared law
- Soundcloud's Creative Commons Search
- Vimeo's Creative Commons Search
- Wikimedia Commons
- Wikipedia - All under CC BY-SA license
- XKCD
Other awesome lists
License
MIT