Nope, it's from Chromium:

http://blog.chromium.org/2009/06/launching-sputnik-into-orbit.html
http://blog.chromium.org/2010/03/does-your-browser-behave.html

Mihai

On Tue, Aug 10, 2010 at 1:30 PM, Dirk Pranke <dpranke@chromium.org> wrote:
I thought Sputnik came from Microsoft?

-- Dirk

On Tue, Aug 10, 2010 at 11:51 AM, Eric Seidel <eric@webkit.org> wrote:
> Chromium skips it (and if I remember correctly, they commissioned it?)
>
> Why do we want to be running these 6000 tests and slowing down our
> builds.  I was talking with jamesr, and he seemed to think it adds
> little value to run it every time?  (It was supposedly written as more
> of a development tool for V8?)  But maybe I'm missing something?
>
> -eric
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