https://www.opendatanetwork.com/ https://www.google.com/publicdata https://aws.amazon.com/public-datasets/ https://www.kaggle.com/
https://deeplearning4j.org/opendata
https://www.data.gov/ https://www.census.gov https://www.fda.gov/Drugs/InformationOnDrugs/ https://nces.ed.gov/ https://ucr.fbi.gov/
https://www.healthdata.gov/ http://www.who.int/gho
http://data.worldbank.org/data-catalog/
https://sos.noaa.gov/Datasets/ https://earthdata.nasa.gov/
https://trends.google.com http://www.socialmention.com/
https://www.mockaroo.com/ https://www.generatedata.com/
https://education.github.com/pack
http://zurb.com/patterntap https://pttrns.com/ http://uxarchive.com/
http://origami.design/ (to help communicate design interaction with team, do not submit prototypes)
https://www.gratisography.com/ http://nos.twnsnd.co/ http://superfamous.com/ http://isorepublic.com/
http://100daysoffonts.com/ is this really free? google fonts? or, not have to include the blatantly obvious?
https://thenounproject.com/ https://icomoon.io/ https://iconmonstr.com/