Amazon Kindle – powered by syslog-ng
One of the most popular e-book reader, the Amazon Kindle, uses syslog-ng to log events on the device. It runs version 1.6, which is many years old. As many million Kindle devices were sold, this is most likely our most widely used syslog-ng version, even if its users don’t actually know about it.
You can find syslog-ng in the Kindle sources published by Amazon at http://www.amazon.com/gp/help/customer/display.html?ie=UTF8&nodeId=200203720 It would be an interesting challenge to update syslog-ng on Kindle to a current version