- https://www.gimp.org/
- https://inkscape.org/en/
- https://krita.org/en/
- https://www.figma.com
- https://vectr.com/
- https://gravit.io/
- http://www.libreoffice.org/discover/draw/
- https://pinta-project.com/pintaproject/pinta/
- https://pencil.evolus.vn/
- https://github.com/jgraph/draw.io
- http://rawtherapee.com/
- https://www.darktable.org/
- https://www.digikam.org/about.html
- https://sketchapp.com/
- https://zeplin.io/
- https://www.omnigroup.com/omnigraffle
- https://affinity.serif.com/en-us/designer/
- http://paletton.com/
- https://github.com/shime/creative-commons-media
- https://github.com/brabadu/awesome-fonts
- https://github.com/neutraltone/awesome-stock-resources
- https://www.google.com/advanced_image_search (edit license)
- https://www.flickr.com/search/ (edit license)
- https://www.pexels.com/
- https://unsplash.com/
- https://stocksnap.io/
- http://www.gratisography.com/
- https://pixabay.com/
- https://www.vecteezy.com/
- https://www.vectorstock.com/royalty-free-vectors
- http://publicdomainvectors.org/
- https://www.graphicstock.com/
- https://videos.pexels.com/
- https://www.videvo.net/
- https://www.videoblocks.com/freeclips/
- https://www.videezy.com/
- https://www.flickr.com/search/?license=4%2C5%2C6%2C9%2C10&media=videos
- https://www.materialui.co/colors
- http://paletton.com/
- https://coolors.co/app
- https://www.materialpalette.com/
- https://fonts.google.com/
- https://www.typewolf.com/google-fonts
- https://fontlibrary.org/
- https://www.theleagueofmoveabletype.com/
- https://www.fontsquirrel.com/
- http://fontawesome.io/
- https://www.iconfinder.com/
- http://iconmonstr.com/
- https://thenounproject.com/
- https://materialdesignicons.com/
- https://material.io/icons/
- https://getmdl.io/
- http://flaticons.net/
- http://www.flaticon.com/