A dataset relating characteristics of telephony account features and usage and whether or not the customer churned.
Source
Churn Data Set from Discovering Knowledge in Data: An Introduction to Data Mining
Info about the top 10,000 Twitter users with more followers
SocialBro application
Dataset of Telecom company to predict churn. 5000 instances.
Info about the top 10,000 Companies with more followers in Twitter
1 million Github repos got from Github API
A collection of Google products, their start/end release dates, and other properties
Based in the article PREDICTING GOOGLE CLOSURES and the dataset provided there
Info about the top 30,000 Twitter users with more followers, 10,000 Females, 10,000 Males and 10,000 Companies.
