Data is the blood of data science.Finding the right data for a research project is a time-consuming task. Most data is not free to download. Below are some of the data sources I use frequently, most of which are free for you to access or download.
General Data
Search
datasetsearch
Google Public Data
research.google
knoema
Data Index
opendata.aws
YouTube-8M
MS Open Data
2,000 Data Repositories
Global public opinion
Realtime Datasets
BuzzFeedNews
Awesome Public Datasets
A guide to open data
Public Data
Data Mining and Data Science
Nature Sdata
figshare
zenodo
2020 Data
Dataverse
datahub
Data by topic
588 dataportals
statista
EIA
TradeMap
World Orgnizations
OECD
UN data
UN Educational& Scientific
UN Drug&Crime
World-factbook
Nasa
World Bank
IMF data
FAO
WHO
Health Intelligence
ML competitions
kaggle
quandl
Million Song Dataset
ML Repository
ML competition
Drivendata competition
THE MNIST DATABASE
Chars74K dataset
FACE RECOGNITION HOMEPAGE
image-net
Data by Section
Data Links
15 free-open-data
50-free-data
50 open-data
100-free-data
https://libraryguides.umassmed.edu/research_data_management_resources/open_public_data
https://infogram.com/blog/free-data-sources/
https://piktochart.com/blog/100-data-sets/
10 top data
7 free-public-data-sets
50 big-data
indexmundi.com
Data by Country
USA
U.S. Government’s open data
USA facts
EPA GIS
US Census
USA Statistics
Healthdata
Labor Statistics
FRED
Food &Drug
Agricultural Research Service
Bureau of Economic Analysis
500 Companies