Apple ResearchKit on GitHub
While it's wonderful they did this, as a short rant:<p>I hate when companies just feel the urge to add a random sentence or two to an existing license, particularly in cases like these:<p>"3. Neither the name of the copyright holder(s) nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission. No license is granted to the trademarks of
the copyright holders even if such marks are included in this software."<p>The first sentence is BSD, they added the second sentence. 
The problem with this is a few-fold.<p>Either this clause is needed <i>for the entire world</i> (since BSD is used for trademark'd software all the time), or it's <i>not needed at all</i>.<p>It turns out, in fact, arguments over trademark inclusion due to OSS licensing has been made before, and nobody has ever won on this before[1]
So other than some lawyer just "not being satisfied unless they added stuff to the license", all this does is make a gratuitously different license that<p>A. can't be merged with other licenses (since it requires you reproduce <i>this</i> condition text, and <i>this</i> condition text is not the same anymore as the other ones)<p>B. Isn't actually the BSD license, and was deliberately changed, so ends up worse in court since now the other side can reasonably argue that the same precedent should't apply.<p>C. Makes analyzing compatibility with other licenses more difficult and annoying.<p>[1]  Since they are very clearly  licenses about the software work, not trademarks, and you can't stop someone from saying "this uses apple's researchkit" regardless of what trademarks you have or what you write in this license, anyway.