ライセンスの種類と要点
ライセンスの罠には気をつけましょう！
ネット上だとフリーのプログラムライブラリや画像が「これはフリーですよ」と言っておいてありますよね？
あれ、よくよく見ると「ただし、うちのバナーを貼り付けること」や「改変禁止、商用利用不可」等書いてありますので、注意をしてください。
目次
GPL(GNU General Public License)
オープンソース・フリーウェア用のライセンスです。- プログラムの実行
- プログラムの動作を調べ、それを改変すること
- 複製物の再頒布
- プログラムを改良し、改良を公衆にリリースする権利
- GPLライセンスのものを使用したものを作った場合、基本的にそれはGPLライセンスでなければならない
GNU GPL v3 解説書
Wikipedia GPL
LGPL(Lesser General Public License )
GPLライセンスをベースにしたライセンス。基本的にGPLライセンスを引き継いでいますが、こちらの方が制限を緩和したライセンスです。
- LGPLライセンスの元で開発されたソースを利用したソフトウェアを開発しても、
独自開発部分のソースコードの公開は強制しない。 - GPLと違い、LGPLで作られたものはLGPLのライセンスを付与しなくてもよい
- ただし改変をして作成されたものを頒布する場合はLGPLまたはGPLライセンスである必要がある
The GNU Lesser General Public License（原文）
The GNU Lesser General Public License, version 2.1（原文）
Wikipedia LGPL
BSD(BSD License)
とっても自由なライセンス。- 著作権の表示と免責条項さえ明記しておけば、再利用も再配布も自由となる。
- 無保証であることの明記と著作権およびライセンス条文自身の表示を再頒布の条件とするライセンス規定である。
- 商用のプログラムに取り入れることも自由である。
- ソースコードのの公開の必要性がない。
BSDライセンス・・・開発者名を表示
修正BSDライセンス・・・開発者名を表示しなくてもよい
The BSD License
Wikipedia BSDライセンス
MIT(MIT License)
BSDライセンスをベースに作成されたライセンス。- このソフトウェアを誰でも無償で無制限に扱って良い
- ただし、著作権表示および本許諾表示をソフトウェアのすべての複製または重要な部分に記載しなければならない
- 作者または著作権者は、ソフトウェアに関してなんら責任を負わない
Wikipedia MIT License
CC(Creative Commons)
著作物に使えるライセンス。- 様々な作品の作者が自ら「この条件を守れば私の作品を自由に使って良いですよ」という意思表示をするためのツールです。
- CCライセンスを利用することで、作者は著作権を保持したまま作品を自由に流通させることができ、
受け手はライセンス条件の範囲内で再配布やリミックスなどをすることができます。
下記の画像によって作品仕様の条件を設定しています。
作品を複製、頒布、展示、実演を行うにあたり、著作権者の表示を要求する。
作品を複製、頒布、展示、実演を行うにあたり、非営利目的での利用に限定する。
作品を複製、頒布、展示、実演を行うにあたり、いかなる改変も禁止する。
クリエイティブ・コモンズのライセンスが付与された作品を改変・変形・加工してできた作品についても、
元になった作品のライセンスを継承させた上で頒布を認める。
Wikipedia クリエイティブ・コモンズ
クリエイティブ・コモンズ・ジャパン
パブリックドメイン (public domain）
著作権が放棄された著作物。- 著作権や商標権 が消滅ないし放棄された状態を指す。
- 厳密に言えば状態なのでライセンスではなく、ライセンスの表示等の必要はない。
Wikipedia パブリックドメイン
他のライセンス等もありますが、今回はここまで。
またライセンスを使用する際の表記方法やライセンスのバージョンによって微妙に内容が異なるのでご注意ください。
詳しく知りたい方は各項目のリンクを見てみてください。
関連記事
Comments
I’m often to blogging and i really appreciate your content. The article has actually peaks my interest. I’m going to bookmark your web site and maintain checking for brand spanking new information.
Awesome! Its genuinely remarkable post, I have got much clear idea regarding from this post
I appreciate you sharing this blog post. Thanks Again. Cool.
I appreciate you sharing this blog post. Thanks Again. Cool.
I just like the helpful information you provide in your articles
Nice post. I learn something totally new and challenging on websites
I just like the helpful information you provide in your articles
Good post! We will be linking to this particularly great post on our site. Keep up the great writing
I very delighted to find this internet site on bing, just what I was searching for as well saved to fav
I really like reading through a post that can make men and women think. Also, thank you for allowing me to comment!
This is my first time pay a quick visit at here and i am really happy to read everthing at one place
For the reason that the admin of this site is working, no uncertainty very quickly it will be renowned, due to its quality contents.
I just like the helpful information you provide in your articles
Great information shared.. really enjoyed reading this post thank you author for sharing this post .. appreciated
For the reason that the admin of this site is working, no uncertainty very quickly it will be renowned, due to its quality contents.
I appreciate you sharing this blog post. Thanks Again. Cool.
Awesome! Its genuinely remarkable post, I have got much clear idea regarding from this post
There is definately a lot to find out about this subject. I like all the points you made
naturally like your web site however you need to take a look at the spelling on several of your posts. A number of them are rife with spelling problems and I find it very bothersome to tell the truth on the other hand I will surely come again again.
I like the efforts you have put in this, regards for all the great content.
There is definately a lot to find out about this subject. I like all the points you made
Pretty! This has been a really wonderful post. Many thanks for providing these details.
You’re so awesome! I don’t believe I have read a single thing like that before. So great to find someone with some original thoughts on this topic. Really.. thank you for starting this up. This website is something that is needed on the internet, someone with a little originality!
I very delighted to find this internet site on bing, just what I was searching for as well saved to fav
Great information shared.. really enjoyed reading this post thank you author for sharing this post .. appreciated
I really like reading through a post that can make men and women think. Also, thank you for allowing me to comment!
I appreciate you sharing this blog post. Thanks Again. Cool.
Hi there to all, for the reason that I am genuinely keen of reading this website’s post to be updated on a regular basis. It carries pleasant stuff.
I truly appreciate your technique of writing a blog. I added it to my bookmark site list and will
I like the efforts you have put in this, regards for all the great content.
I do not even understand how I ended up here, but I assumed this publish used to be great
Pretty! This has been a really wonderful post. Many thanks for providing these details.
I do not even understand how I ended up here, but I assumed this publish used to be great
You’re so awesome! I don’t believe I have read a single thing like that before. So great to find someone with some original thoughts on this topic. Really.. thank you for starting this up. This website is something that is needed on the internet, someone with a little originality!
I appreciate you sharing this blog post. Thanks Again. Cool.
You’re so awesome! I don’t believe I have read a single thing like that before. So great to find someone with some original thoughts on this topic. Really.. thank you for starting this up. This website is something that is needed on the internet, someone with a little originality!
For the reason that the admin of this site is working, no uncertainty very quickly it will be renowned, due to its quality contents.
very informative articles or reviews at this time.
I like the efforts you have put in this, regards for all the great content.
You’re so awesome! I don’t believe I have read a single thing like that before. So great to find someone with some original thoughts on this topic. Really.. thank you for starting this up. This website is something that is needed on the internet, someone with a little originality!
For the reason that the admin of this site is working, no uncertainty very quickly it will be renowned, due to its quality contents.
Nice post. I learn something totally new and challenging on websites
I’m often to blogging and i really appreciate your content. The article has actually peaks my interest. I’m going to bookmark your web site and maintain checking for brand spanking new information.
Awesome! Its genuinely remarkable post, I have got much clear idea regarding from this post
Very well presented. Every quote was awesome and thanks for sharing the content. Keep sharing and keep motivating others.
Good post! We will be linking to this particularly great post on our site. Keep up the great writing
For the reason that the admin of this site is working, no uncertainty very quickly it will be renowned, due to its quality contents.
I really like reading through a post that can make men and women think. Also, thank you for allowing me to comment!
I do not even understand how I ended up here, but I assumed this publish used to be great
I just like the helpful information you provide in your articles
naturally like your web site however you need to take a look at the spelling on several of your posts. A number of them are rife with spelling problems and I find it very bothersome to tell the truth on the other hand I will surely come again again.
naturally like your web site however you need to take a look at the spelling on several of your posts. A number of them are rife with spelling problems and I find it very bothersome to tell the truth on the other hand I will surely come again again.
This is my first time pay a quick visit at here and i am really happy to read everthing at one place
Hi there to all, for the reason that I am genuinely keen of reading this website’s post to be updated on a regular basis. It carries pleasant stuff.
Very well presented. Every quote was awesome and thanks for sharing the content. Keep sharing and keep motivating others.
Great information shared.. really enjoyed reading this post thank you author for sharing this post .. appreciated
There is definately a lot to find out about this subject. I like all the points you made
I truly appreciate your technique of writing a blog. I added it to my bookmark site list and will
I truly appreciate your technique of writing a blog. I added it to my bookmark site list and will
I do not even understand how I ended up here, but I assumed this publish used to be great
naturally like your web site however you need to take a look at the spelling on several of your posts. A number of them are rife with spelling problems and I find it very bothersome to tell the truth on the other hand I will surely come again again.
I just like the helpful information you provide in your articles
I like the efforts you have put in this, regards for all the great content.
Awesome! Its genuinely remarkable post, I have got much clear idea regarding from this post
I’m often to blogging and i really appreciate your content. The article has actually peaks my interest. I’m going to bookmark your web site and maintain checking for brand spanking new information.
I like the efforts you have put in this, regards for all the great content.
Awesome! Its genuinely remarkable post, I have got much clear idea regarding from this post
Hi there to all, for the reason that I am genuinely keen of reading this website’s post to be updated on a regular basis. It carries pleasant stuff.
This was beautiful Admin. Thank you for your reflections.
I do not even understand how I ended up here, but I assumed this publish used to be great
There is definately a lot to find out about this subject. I like all the points you made
I appreciate you sharing this blog post. Thanks Again. Cool.
Great information shared.. really enjoyed reading this post thank you author for sharing this post .. appreciated
There is definately a lot to find out about this subject. I like all the points you made
Great information shared.. really enjoyed reading this post thank you author for sharing this post .. appreciated
I like the efforts you have put in this, regards for all the great content.
Great information shared.. really enjoyed reading this post thank you author for sharing this post .. appreciated
Very well presented. Every quote was awesome and thanks for sharing the content. Keep sharing and keep motivating others.
Keep up the amazing work!