Answers.Body: <h2>Calibre</h2>
  
  <p>It is the leading ebook management tool.  However, you should be aware when you do add a title into Calibre it will embed a bookmark file in the <code>META-INF</code> folder and will modify your <code>.opf</code> file.  Other than that it is avaiable for all environments:</p>
  
  <ul>
  <li><a href="http://calibre-ebook.com/download_windows" rel="nofollow noreferrer">Calibre for Windows</a>; <a href="http://calibre-ebook.com/download_windows64" rel="nofollow noreferrer">64-bit</a></li>
  <li><a href="http://calibre-ebook.com/download_osx" rel="nofollow noreferrer">Calibre for Mac</a></li>
  <li><p><a href="http://calibre-ebook.com/download_linux" rel="nofollow noreferrer">Linux</a>; How to install on Ubunutu: </p>
  
  <p><code>sudo add-apt-repository ppa:n-muench/calibre
   sudo apt-get update 
   sudo apt-get install calibre</code></p></li>
  <li><p><a href="http://calibre-ebook.com/download_portable" rel="nofollow noreferrer">Portability on a thumb drive</a></p></li>
  </ul>
  
  <h2>Adobe Digital Editions</h2>
  
  <p>Free and from Adobe.  Be advised there has been some issues lately in viewing DRM <code>.epub</code> 3.0 ebooks and the fonts not rendering correctly.  This is a bug that was introduced a few months ago on the update but no word yet on when the issue will be addressed.  Download page for <a href="http://www.adobe.com/products/digital-editions/download.html" rel="nofollow noreferrer">Adobe Digital Editions</a>.  You can install ADE on Ubuntu but you will need Wine.  Good article read: <a href="http://robert.penz.name/440/howto-install-adobe-digital-editions-on-ubuntu-12-04-and-use-it-with-an-e-book-reader/" rel="nofollow noreferrer">"Howto install Adobe Digital Editions on Ubuntu 12.04 and use it with an e-book reader"</a></p>
  
  <h2>BookONO</h2>
  
  <p>A management tool I haven't tested or used but they are trying to compete with Calibre so it could be a worthy alternative: <a href="http://etopian.com/software/bookono/" rel="nofollow noreferrer">BookONO E-book Manager</a></p>
  
  <h2>Adobe PDF Reader</h2>
  
  <p>You mention ebooks but not what type.  So just throwing <a href="http://get.adobe.com/reader/" rel="nofollow noreferrer">Adobe PDF Reader</a> for web <code>.pdf</code>s.  Good write up over at AskUbuntu on installing adobe PDF reader on Ubuntu: "<a href="https://askubuntu.com/questions/89127/how-do-i-install-adobe-acrobat-reader">How do I install Adobe Acrobat Reader?</a>"</p>
  
  <p><strong>A few others I've heard but haven't used:</strong></p>
  
  <ul>
  <li><a href="http://delicious-monster.com/" rel="nofollow noreferrer">Delicious Library 3</a></li>
  <li><a href="http://www.alfaebooks.com/" rel="nofollow noreferrer">Alfa Ebooks Manager</a></li>
  <li><a href="http://www.moondownload.com/" rel="nofollow noreferrer">Moon+ Reader</a></li>
  <li><a href="http://www.bolidesoft.com/allmybooks.html" rel="nofollow noreferrer">All my books</a></li>
  <li><a href="http://www.datacrow.net/" rel="nofollow noreferrer">Data Crow</a></li>
  <li><a href="http://lucidor.org/lucidor/" rel="nofollow noreferrer">Lucidor</a></li>
  </ul>
  
  <hr>
  
  <p>After the added tag <a href="/questions/tagged/mac-os" class="post-tag" title="show questions tagged &#39;mac-os&#39;" rel="tag">mac-os</a>:</p>
  
  <ul>
  <li><a href="https://itunes.apple.com/us/app/ibooks/id364709193?mt=8" rel="nofollow noreferrer">iBooks</a></li>
  <li><a href="http://www.koobits.com/" rel="nofollow noreferrer">KooBits</a></li>
  <li><a href="http://getscida.com/" rel="nofollow noreferrer">Scida</a></li>
  </ul>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-03-24T14:40:54.300Z
Answers.LastActivityDate: 2014-03-24T19:21:32.043Z
Answers.LastEditDate: 2017-04-13T12:25:25.537Z
Answers.UserDisplayName: DᴀʀᴛʜVᴀᴅᴇʀ
Answers.Body: <p>Jeboorker is also a look worth. I use it to manage my local epub and pdf ebooks. It's open source, and available for Linux and Windows. You can downlaod it <a href="https://code.google.com/p/jeboorker/" rel="nofollow">here</a>.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-04-26T07:32:27.220Z
Answers.LastActivityDate: 2014-04-26T07:32:27.220Z
Answers.UserDisplayName: Alfredo
Answers.Body: <p>Google Play Books is a good cloud option.  They have <a href="https://itunes.apple.com/us/app/google-play-books/id400989007?mt=8" rel="nofollow">iphone</a>, android, and <a href="https://play.google.com/store/books?utm_source=HA_Desktop_US&amp;utm_medium=SEM&amp;utm_campaign=gplaunch&amp;pcampaignid=MKTAD0715PY" rel="nofollow">web</a>.  If you are looking for conversion functionality and more than just a library / reading, calibre as mentioned is useful.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-03-24T16:55:27.037Z
Answers.LastActivityDate: 2014-03-24T16:55:27.037Z
Answers.UserDisplayName: drneel
Answers.Body: <p>If you have Firefox browser, you can try <a href="https://addons.mozilla.org/en-US/firefox/user/epubreader/?src=api" rel="nofollow">EPUB Reader</a> add-on.</p>
  
  <p>Simple clean interface, and good performance because it's using Firefox.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-26T16:16:46.277Z
Answers.LastActivityDate: 2015-09-26T16:16:46.277Z
Answers.UserDisplayName: Paulb
Answers.Body: <p>Calibre is a free and open source e-book library management application available. You can download from <a href="http://calibre-ebook.com/download">here</a> which is available for all operating systems.</p>
  
  <p>Adobe Digital Editions is also one of the e-book manager by Adobe. You can access it from <a href="http://www.adobe.com/products/digital-editions.html">here</a>.</p>
  
  <p>Alfa Ebooks Manager features a lot of templates and options for library vizualization. Besides, it allows to update book data from multiple web sources (like Amazon, Google Books, Barnes &amp; Nobel, etc). It's also good at file management and metadata extraction. You can download it from <a href="http://www.alfaebooks.com/products/alfaebookmanager/download">here</a>.</p>
  
  <p>Delicious Library's a bit different. Actually it's a software not just for books but for managing all stuff at your home. It's greates feature - entering books via webcam shot (it recognizes ISBN code). This feature makes Delicious Library the best software for collecting paper books. You can see the details from <a href="http://www.delicious-monster.com/get/">here</a>.</p>
  
  <p>And if you are a mac user Delicious Library is the best e-book manager but unfortunately it's not free. Second priority I will give to Alfa eBooks Manager.</p>
  
  <p>Hope it will help!</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-12-10T10:38:08.750Z
Answers.Text: You should mention the downside to using Calibre (or maybe some of the other if it also applies to them) - It copies the ebooks to it's own directory based "database" - so If you want to keep the original directory structure of your library, you'd have to keep two copies of your library... and you have to maintain both to keep them synchronized.
Answers.UserDisplayName: Mr.WorshipMe
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-03-24T12:28:37.827Z
Answers.LastActivityDate: 2014-03-24T12:28:37.827Z
Answers.UserDisplayName: ritesh
Body: <p>I have a collection of e-books and I am looking for a way to manage it from my operating system. What are the programs to manage e-books available for free? I use both Linux and Windows OS, can you suggest some good software?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-03-27T17:27:06.187Z
Comments.Text: [Software Recommendations](http://softwarerecs.stackexchange.com/search?q=ebook+is%3Aquestion) has some good pointers too…
Comments.UserDisplayName: e-sushi
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-01-12T01:10:17.173Z
Comments.Text: Calibre used to be excellent. Now it refuses to recognises readers, which makes it useless. Tried uninstalling and re- installing several times but I have now given up. I am looking for one to take its place now.
Comments.UserDisplayName: Brian Harper
Tags: <windows><free><linux><mac-os><ebook-management>
Title: Are there good ebook management tools available for free?
UserDisplayName: CodeCrypt
ThreadText: # Are there good ebook management tools available for free?
  
  (Asked by: username_0 on 2014-03-24)
  
  I have a collection of e-books and I am looking for a way to manage it from my operating system. What are the programs to manage e-books available for free? I use both Linux and Windows OS, can you suggest some good software?
  
  **Tags:** windows, free, linux, mac-os, ebook-management
  
  > **Comments:**
  > **username_1**: [Software Recommendations](http://softwarerecs.stackexchange.com/search?q=ebook+is%3Aquestion) has some good pointers too…  
  > **username_2**: Calibre used to be excellent. Now it refuses to recognises readers, which makes it useless. Tried uninstalling and re- installing several times but I have now given up. I am looking for one to take its place now.  
  
  ---
  
  ## 5 answers
  
  ### Answer by username_7 on 2014-03-24. Score: 27 | Accepted answer
  
  Calibre is a free and open source e-book library management application available. You can download from [here](http://calibre-ebook.com/download) which is available for all operating systems.
  
  Adobe Digital Editions is also one of the e-book manager by Adobe. You can access it from [here](http://www.adobe.com/products/digital-editions.html).
  
  Alfa Ebooks Manager features a lot of templates and options for library vizualization. Besides, it allows to update book data from multiple web sources (like Amazon, Google Books, Barnes & Nobel, etc). It's also good at file management and metadata extraction. You can download it from [here](http://www.alfaebooks.com/products/alfaebookmanager/download).
  
  Delicious Library's a bit different. Actually it's a software not just for books but for managing all stuff at your home. It's greates feature - entering books via webcam shot (it recognizes ISBN code). This feature makes Delicious Library the best software for collecting paper books. You can see the details from [here](http://www.delicious-monster.com/get/).
  
  And if you are a mac user Delicious Library is the best e-book manager but unfortunately it's not free. Second priority I will give to Alfa eBooks Manager.
  
  Hope it will help!
  
  > **Comments:**
  > **username_8**: You should mention the downside to using Calibre (or maybe some of the other if it also applies to them) - It copies the ebooks to it's own directory based "database" - so If you want to keep the original directory structure of your library, you'd have to keep two copies of your library... and you have to maintain both to keep them synchronized.  
  
  ---
  
  ### Answer by username_3 on 2014-03-24. Score: 18
  
  ## Calibre
  
  It is the leading ebook management tool. However, you should be aware when you do add a title into Calibre it will embed a bookmark file in the `META-INF` folder and will modify your `.opf` file. Other than that it is avaiable for all environments:
  
  * [Calibre for Windows](http://calibre-ebook.com/download_windows); [64-bit](http://calibre-ebook.com/download_windows64)
  * [Calibre for Mac](http://calibre-ebook.com/download_osx)
  * [Linux](http://calibre-ebook.com/download_linux); How to install on Ubunutu:
  
    `sudo add-apt-repository ppa:n-muench/calibre
    sudo apt-get update
    sudo apt-get install calibre`
  * [Portability on a thumb drive](http://calibre-ebook.com/download_portable)
  
  ## Adobe Digital Editions
  
  Free and from Adobe. Be advised there has been some issues lately in viewing DRM `.epub` 3.0 ebooks and the fonts not rendering correctly. This is a bug that was introduced a few months ago on the update but no word yet on when the issue will be addressed. Download page for [Adobe Digital Editions](http://www.adobe.com/products/digital-editions/download.html). You can install ADE on Ubuntu but you will need Wine. Good article read: ["Howto install Adobe Digital Editions on Ubuntu 12.04 and use it with an e-book reader"](http://robert.penz.name/440/howto-install-adobe-digital-editions-on-ubuntu-12-04-and-use-it-with-an-e-book-reader/)
  
  ## BookONO
  
  A management tool I haven't tested or used but they are trying to compete with Calibre so it could be a worthy alternative: [BookONO E-book Manager](http://etopian.com/software/bookono/)
  
  ## Adobe PDF Reader
  
  You mention ebooks but not what type. So just throwing [Adobe PDF Reader](http://get.adobe.com/reader/) for web `.pdf`s. Good write up over at AskUbuntu on installing adobe PDF reader on Ubuntu: "[How do I install Adobe Acrobat Reader?](https://askubuntu.com/questions/89127/how-do-i-install-adobe-acrobat-reader)"
  
  **A few others I've heard but haven't used:**
  
  * [Delicious Library 3](http://delicious-monster.com/)
  * [Alfa Ebooks Manager](http://www.alfaebooks.com/)
  * [Moon+ Reader](http://www.moondownload.com/)
  * [All my books](http://www.bolidesoft.com/allmybooks.html)
  * [Data Crow](http://www.datacrow.net/)
  * [Lucidor](http://lucidor.org/lucidor/)
  
  ---
  
  After the added tag [mac-os](/questions/tagged/mac-os "show questions tagged 'mac-os'"):
  
  * [iBooks](https://itunes.apple.com/us/app/ibooks/id364709193?mt=8)
  * [KooBits](http://www.koobits.com/)
  * [Scida](http://getscida.com/)
  
  
  ---
  
  ### Answer by username_4 on 2014-04-26. Score: 4
  
  Jeboorker is also a look worth. I use it to manage my local epub and pdf ebooks. It's open source, and available for Linux and Windows. You can downlaod it [here](https://code.google.com/p/jeboorker/).
  
  
  ---
  
  ### Answer by username_5 on 2014-03-24. Score: 2
  
  Google Play Books is a good cloud option. They have [iphone](https://itunes.apple.com/us/app/google-play-books/id400989007?mt=8), android, and [web](https://play.google.com/store/books?utm_source=HA_Desktop_US&utm_medium=SEM&utm_campaign=gplaunch&pcampaignid=MKTAD0715PY). If you are looking for conversion functionality and more than just a library / reading, calibre as mentioned is useful.
  
  
  ---
  
  ### Answer by username_6 on 2015-09-26. Score: 0
  
  If you have Firefox browser, you can try [EPUB Reader](https://addons.mozilla.org/en-US/firefox/user/epubreader/?src=api) add-on.
  
  Simple clean interface, and good performance because it's using Firefox.
  
  
  ---
  
  