user8046: Recently I have noticed that there are two arduino sites, arduino.cc and arduino.org.  They both have the Arduino logo and both sell what seems to be official Arduino boards. Also, arduino.org came out with the Arduino Zero board first. What is the deal here? Has Arduino partnered with another site? Any ideas appreciated.

user15155: arduino.org is not only boards assembler, but is also who designs and engineers the arduino boards. They own the arduino trademark all over the world, except the USA, therefore arduino.cc owns the trademark only in the USA.

user29146: Update on the situation: on October 1st, 2016 a blog post at arduino.cc "Two Arduinos become one" announced that an agreement was found between arduino.cc and arduino.org. Two key points: 

the creation of a foundation 
the creation of a holding.

About the holding:

At the end of 2016, the newly created “Arduino Holding” will become the single point of contact for the wholesale distribution of all current and future products, and will continue to bring tremendous innovations to the market.

About the foundation:

In addition, Arduino will form a not-for-profit “Arduino Foundation” responsible for maintaining the open-source Arduino desktop IDE, and continuing to foster the open-source movement by providing support for a variety of scholarships, community and developer initiatives.


user19086: Please take a look at The Untold History of Arduino.

user8616: This article can explain it better than I could paraphrase:
http://hackaday.com/2015/02/25/arduino-v-arduino/
Relevant excerpt:

Arduino LLC [arduino.cc] is the company founded by Massimo Banzi, David Cuartielles, David Mellis, Tom Igoe and Gianluca Martino in 2009 and is the owner of the Arduino trademark and gave us the designs, software, and community support that’s gotten the Arduino where it is. The boards were manufactured by a spinoff company, Smart Projects Srl, founded by the same Gianluca Martino. So far, so good.
Things got ugly in November when Martino ... renamed Smart Projects to Arduino Srl and registered arduino.org
According to this Italian Wired article, the cause of the split is that Banzi and the other three wanted to internationalize the brand and license production to other firms freely, while Martino ... [wanted] to list on the stock market and keep all production strictly in the Italian factory.


user368: The short of it is that there was a falling out within the Arduino people and now there are two groups laying claim to the "Arduino" name.
Arduino LLC runs arduino.cc. They are the steward of the Arduino IDE and libraries and own the "Arduino" trademark in the United States, and also owns the "Genuino" trademark outside of the United States. Arduino SRL (fka Smart Projects SRL) is the company that assembles(assembled) the majority of Arduino boards for Arduino LLC, runs arduino.org, and owns the "Arduino" trademark inside Italy and all of the other countries they have registered the "Arduino" trademark.
Arduino SRL recently decided that they are no longer beholden to Arduino LLC and has stopped paying licensing fees for using the Arduino name. Whether this is justified or not has not been fully tested in court yet.

8046: <p>Recently I have noticed that there are two arduino sites, arduino.cc and arduino.org.  They both have the Arduino logo and both sell what seems to be official Arduino boards. Also, arduino.org came out with the Arduino Zero board first. What is the deal here? Has Arduino partnered with another site? Any ideas appreciated.</p>
 15155: <p><a href="http://www.arduino.org" rel="nofollow">arduino.org</a> is not only boards assembler, but is also who designs and engineers the arduino boards. They own the arduino trademark all over the world, except the USA, therefore <a href="http://www.arduino.cc" rel="nofollow">arduino.cc</a> owns the trademark only in the USA.</p>
 29146: <p>Update on the situation: on October 1st, 2016 a blog post at arduino.cc "<a href="https://blog.arduino.cc/2016/10/01/two-arduinos-become-one-2/" rel="noreferrer">Two Arduinos become one</a>" announced that an agreement was found between arduino.cc and arduino.org. Two key points: </p>

<ul>
<li>the creation of a foundation </li>
<li>the creation of a holding.</li>
</ul>

<p>About the holding:</p>

<blockquote>
  <p>At the end of 2016, the newly created “Arduino Holding” will become the single point of contact for the wholesale distribution of all current and future products, and will continue to bring tremendous innovations to the market.</p>
</blockquote>

<p>About the foundation:</p>

<blockquote>
  <p>In addition, Arduino will form a not-for-profit “Arduino Foundation” responsible for maintaining the open-source Arduino desktop IDE, and continuing to foster the open-source movement by providing support for a variety of scholarships, community and developer initiatives.</p>
</blockquote>
 19086: <p>Please take a look at <a href="http://arduinohistory.github.io">The Untold History of Arduino</a>.</p>
 8616: <p>This article can explain it better than I could paraphrase:
<a href="http://hackaday.com/2015/02/25/arduino-v-arduino/" rel="noreferrer">http://hackaday.com/2015/02/25/arduino-v-arduino/</a></p>
<p>Relevant excerpt:</p>
<blockquote>
<p>Arduino LLC [<em><strong>arduino.cc</strong></em>] is the company founded by Massimo Banzi, David Cuartielles, David Mellis, Tom Igoe and Gianluca Martino in 2009 and is the owner of the Arduino trademark and gave us the designs, software, and community support that’s gotten the Arduino where it is. The boards were manufactured by a spinoff company, Smart Projects Srl, founded by the same Gianluca Martino. So far, so good.</p>
<p>Things got ugly in November when Martino ... renamed Smart Projects to Arduino Srl and registered <em><strong>arduino.org</strong></em></p>
<p>According to this <a href="http://www.wired.it/gadget/computer/2015/02/12/arduino-nel-caos-situazione/" rel="noreferrer">Italian Wired article</a>, the cause of the split is that Banzi and the other three wanted to internationalize the brand and license production to other firms freely, while Martino ... [wanted] to list on the stock market and keep all production strictly in the Italian factory.</p>
</blockquote>
 368: <p>The short of it is that there was a falling out within the Arduino people and now <a href="http://hackaday.com/2015/03/28/arduino-srl-to-distributors-were-the-real-arduino/">there are two groups laying claim to the "Arduino" name.</a></p>

<p>Arduino LLC runs arduino.cc. They are the steward of the Arduino IDE and libraries and own the "Arduino" trademark in the United States, and also owns the "Genuino" trademark outside of the United States. Arduino SRL (fka Smart Projects SRL) is the company that assembles(assembled) the majority of Arduino boards for Arduino LLC, runs arduino.org, and owns the "Arduino" trademark inside Italy and all of the other countries they have registered the "Arduino" trademark.</p>

<p>Arduino SRL recently decided that they are no longer beholden to Arduino LLC and has stopped paying licensing fees for using the Arduino name. Whether this is justified or not has not been fully tested in court yet.</p>
