<blockquote>
  <p>Is Ethereum open source?</p>
</blockquote>

<p>Yes. You can find all the source code on <a href="https://github.com/ethereum" rel="nofollow noreferrer">Github</a>.</p>

<p>Technically, Ethereum - as in the <em>idea</em> - is open source since you can read the full specification in the <a href="https://github.com/ethereum/yellowpaper" rel="nofollow noreferrer">yellow paper</a>. </p>

<p>Ethereum - as in the software - is open source and you can find all major and minor implementations on Github: <a href="https://github.com/ethereum/go-ethereum" rel="nofollow noreferrer">geth</a>, <a href="https://github.com/ethereum/mist" rel="nofollow noreferrer">mist</a>, etc. (GPL, LGPL)</p>

<blockquote>
  <p>But then what about the Ethereum Foundation?</p>
</blockquote>

<p>Yes. You can find a general statement <a href="https://github.com/ethereum/wiki/wiki/Licensing" rel="nofollow noreferrer">here</a></p>

CC BY-SA 3.0
2017-06-07T00:24:21.170Z
Am I correct to assume that I can copy Ethereum's source code, modify it to create my own blockchain and sell my new currency, without any problems provided that I follow GPL and LGPL?
Curt
CC BY-SA 3.0
2017-06-07T07:41:58.660Z
Might be a good question for https://opensource.stackexchange.com/
q9f
CC BY-SA 3.0
2017-03-27T18:29:16.493Z
2017-03-27T18:29:16.493Z
q9f
<p>Is Ethereum open source? </p>

<p>I've heard different things from different people. </p>

<p>Stephan Tual <a href="https://www.quora.com/Is-Ethereum-open-source" rel="nofollow noreferrer">has written</a>: </p>

<p>"<em>Everything at Ethereum, including our website, our tools, our whitepapers and of course our all of our software and compilers are 100%, wall to wall open source and under the GPL.</em>"</p>

<p>But then what about the <a href="https://www.ethereum.org/foundation" rel="nofollow noreferrer">Ethereum Foundation</a>? </p>

<p>How does the <em>open-sourceiodicity</em> of Ethereum compare to that of Bitcoin? How does it compare to that of the proposed "private blockchain" Hyperledger project? </p>

CC BY-SA 3.0
2016-12-01T14:38:54.000Z
If you heard different things from different people, please include a statement in your question which conflicts with the one already in it. If someone answered by stating that the statement already in your question is true, that'd be just another statement on the question. However, if you include statements from either side, an answer my show how one of them is false.
UTF-8
<bitcoin-core><ethereum><open-source><hyperledger>
Relative licensing restrictions of Ethereum and other projects- Open Source?
smatthewenglish
# Relative licensing restrictions of Ethereum and other projects- Open Source?

(Asked by: username_0 on 2016-12-01)

Is Ethereum open source?

I've heard different things from different people.

Stephan Tual [has written](https://www.quora.com/Is-Ethereum-open-source):

"*Everything at Ethereum, including our website, our tools, our whitepapers and of course our all of our software and compilers are 100%, wall to wall open source and under the GPL.*"

But then what about the [Ethereum Foundation](https://www.ethereum.org/foundation)?

How does the *open-sourceiodicity* of Ethereum compare to that of Bitcoin? How does it compare to that of the proposed "private blockchain" Hyperledger project?

**Tags:** bitcoin-core, ethereum, open-source, hyperledger

> **Comments:**
> **username_1**: If you heard different things from different people, please include a statement in your question which conflicts with the one already in it. If someone answered by stating that the statement already in your question is true, that'd be just another statement on the question. However, if you include statements from either side, an answer my show how one of them is false.  

---

## 1 answers

### Answer by username_2 on 2017-03-27. Score: 1 | Accepted answer

> Is Ethereum open source?

Yes. You can find all the source code on [Github](https://github.com/ethereum).

Technically, Ethereum - as in the *idea* - is open source since you can read the full specification in the [yellow paper](https://github.com/ethereum/yellowpaper).

Ethereum - as in the software - is open source and you can find all major and minor implementations on Github: [geth](https://github.com/ethereum/go-ethereum), [mist](https://github.com/ethereum/mist), etc. (GPL, LGPL)

> But then what about the Ethereum Foundation?

Yes. You can find a general statement [here](https://github.com/ethereum/wiki/wiki/Licensing)

> **Comments:**
> **username_3**: Am I correct to assume that I can copy Ethereum's source code, modify it to create my own blockchain and sell my new currency, without any problems provided that I follow GPL and LGPL?  
> **username_2**: Might be a good question for https://opensource.stackexchange.com/  

---

