Apache HTrace
Copyright 2015 The Apache Software Foundation

This product includes software developed at The Apache Software
Foundation (http://www.apache.org/).

In addition, this product includes software dependencies. See
the accompanying LICENSE.txt for a listing of dependencies
that are NOT Apache licensed (with pointers to their licensing)

Apache HTrace includes an Apache Thrift connector to Zipkin. Zipkin
is a distributed tracing system that is Apache 2.0 Licensed.
Copyright 2012 Twitter, Inc.

Our Owl logo we took from http://www.clker.com/clipart-13653.html.
It is public domain/free.