Currents: A Seasonal Report on Developer Trends in the Cloud
DigitalOcean puts out a seasonal report on developer trends. This report coincided with their Hacktoberfest event and focuses on Open Source technology and how developers interact and contribute to it.
Big List of Naughty Strings
Sometimes you really need to break your application. This repo has a large list of things that are likely to break your application if used as user input. These files are mainly intended for use in QA testing but could be useful as general test cases.