In no particular order:

Sources

• Academic Torrents
• Archive.org
• Kaggle
• Awesome public datasets
• r/datasets
• DataHub
• Awesome data distribution dataset sources
• data.world: Requires sign up
• Amazon public datasets: Requires passing an application
• Google public datasets: Accessed through BigQuery

Datasets

• Flickr1024: A Dataset for Stereo Image Super-resolution](https://yingqianwang.github.io/Flickr1024/) ([on Arxiv)
• Middlebury Stereo datasets
• KITTI Vision Benchmark Suite data
• ETH3D Benchmark datasets