[skybrian]

I don't know what happened with trace-viewer; perhaps you could ask the developers?

In some cases, Google uses a BSD-style license with a separate PATENTS file. For example, here are the PATENTS files for Go [1] and Dart [2]. Apache 2 is also common and it includes a patent grant.

[1] https://go.googlesource.com/go/+/master/PATENTS [2] https://code.google.com/p/dart/source/browse/branches/bleedi...