Google Colab: https://colab.research.google.com/
Real-world competitions:
AICrowd: https://www.aicrowd.com/
Kaggle Competition: https://www.kaggle.com/
Curated list of datasets:
Image datasets: https://www.geeksforgeeks.org/computer-vision/dataset-for-image-classification/
Computer Vision Datasets: https://imerit.ai/resources/blog/32-free-image-datasets-for-computer-vision/
Text Datasets: https://www.innovatiana.com/en/post/best-datasets-for-text-classification
Graph Datasets: https://snap.stanford/data
Network Datasets: https://networkrepository.com/index.php
Searching for datasets:
PhysioNet: https://physionet.org/
Google Datasets: https://datasetsearch.research.google.com/
Kaggle Datasets: https://www.kaggle.com/datasets
Hugging Face Datasets: https://huggingface.co/datasets
SNAP Datasets: https://huggingface.co/datasets
NYC Open Data: https://opendata.cityofnewyork.us/
Harvard Dataverse: https://dataverse.harvard.edu/
IEEE DataPort: https://ieee-dataport.org/
BNLearn: https://www.bnlearn.com/
[And more...]
Web data resources:
Yelp Open Datasets: PhysioNet: https://business.yelp.com/data/resources/open-dataset/
Airbnb Dataset: https://business.yelp.com/data/resources/open-dataset/
Wikipedia Dataset: https://en.wikipedia.org/wiki/Wikipedia:Database_download