- freesound – Collaborative database of sounds, mostly sound effects.
- 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.
- Mixkit – A gallery of high-quality videos and animation
- Geonames – The GeoNames geographical database covers all countries and contains over eight million placenames that are available for download free of charge.
- Candela Learning
- MIT OpenCourseWare
- OpenStax College
- P2PU – Peer to peer university – all under CC BY-SA 4.0 license
- Siyavula Open Textbooks
- Skills Commons – Open Career training resources
- Thingiverse – from MakerBot
- 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