- Twitter Sentiment Analysis: http://thinknook.com/twitter-sentiment-analysis-training-corpus-dataset-2012-09-22/
- Topic classification for news (including Reuters, NewsGroup): http://disi.unitn.it/moschitti/corpora.htm
- Movie reviews: http://www.cs.cornell.edu/People/pabo/movie-review-data/
- Other reviews: http://www.text-analytics101.com/2011/07/user-review-datasets_20.html
- Twitter Evaluation dataset: http://tweenator.com/index.php?page_id=13
- Amazon review: https://snap.stanford.edu/data/web-Amazon.html
- Amazon review (upon request): https://www.cs.uic.edu/~liub/FBS/sentiment-analysis.html
- opinmind: https://inclass.kaggle.com/c/si650winter11/data
- Large movie reviews: http://ai.stanford.edu/~amaas/data/sentiment/