Answers.Body: <p>In addition to the other answers, there are a few sites to consider. These include annotation and comment features as mentioned by the OP.</p>
  <p><a href="https://listudy.org" rel="nofollow noreferrer"><strong>Listudy.org</strong></a><br />
  Upload a PGN and then you play the computer interactively. You play moves from your repertoire and the computer plays the opponent moves. This is also open source.</p>
  <p><a href="https://chesstempo.com/" rel="nofollow noreferrer"><strong>ChessTempo.com</strong></a><br />
  Similar functionality in the &quot;Opening Trainer.&quot; The interface is a bit different but it tracks what lines you have learned a bit differently which is nice. Users have access to several settings to accommodate learning training preferences. <a href="https://chess.stackexchange.com/users/15049/nils-lindemann">Nils Lindemann's</a> <a href="https://chess.stackexchange.com/questions/34896/is-there-a-free-online-chess-repertoire-tool/34913#comment74556_34913">comment</a> provides <a href="https://old.chesstempo.com/chess-forum/site_feedback/sort_openings_by_alphabet-t11784.0.html" rel="nofollow noreferrer">userscripts</a> that may further improve the opening trainer.</p>
  <p><a href="https://lichess.org/study" rel="nofollow noreferrer"><strong>lichess.org</strong></a><br />
  As <a href="https://chess.stackexchange.com/users/15478/b-swan">B.Swan</a> has pointed out in a <a href="https://chess.stackexchange.com/questions/34896/is-there-a-free-online-chess-repertoire-tool#comment56845_34896">comment</a>, the Study feature includes this. Further, <a href="https://chess.stackexchange.com/users/27380/hauptideal">Hauptideal</a> points out in a <a href="https://chess.stackexchange.com/questions/34896/is-there-a-free-online-chess-repertoire-tool/34913?noredirect=1#comment65041_34913">comment</a> you can use the Analysis feature's book icon to access master statistics, lichess statistics, and statistics of any lichess account you want.</p>
  <hr />
  <p>There are also other related sites worth exploring to understand their capabilities and how they may supplement the resources above.</p>
  <p><a href="http://www.chesstree.net/" rel="nofollow noreferrer"><strong>ChessTree.com</strong></a><br />
  Import/export PGNs. Search databases, get statistics. See opening relationships in a graphical tree.</p>
  <p><a href="https://www.openingtree.com/" rel="nofollow noreferrer"><strong>OpeningTree.com</strong></a><br />
  Import/export PGNs.  Import and analyze a user's openings from a database, PGN, etc, including popular online chess sites.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-07-12T11:21:59.710Z
Answers.Text: The opening tree functionality was added natively to lichess for own lichess games
Answers.UserDisplayName: Hauptideal
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-07-12T15:02:54.683Z
Answers.Text: @Hauptideal thanks, I'll look into it and update the answer accordingly once I've tested its functionality relative to the OP's question.  Appreciate the tip!
Answers.UserDisplayName: SecretAgentMan
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-07-12T22:03:45.837Z
Answers.Text: @Hauptideal do you have a link to what you're referring to?
Answers.UserDisplayName: SecretAgentMan
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-07-12T22:33:31.890Z
Answers.Text: https://lichess.org/analysis
  Click on the book icon and select player. You'll get master statistics, lichess statistics and statistics of any lichess account you want.
Answers.UserDisplayName: Hauptideal
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-07-13T01:18:00.757Z
Answers.Text: @Hauptideal Ah. Thanks. I know about that.  I was hoping you meant something more.  Thanks again.
Answers.UserDisplayName: SecretAgentMan
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-06-25T07:53:56.093Z
Answers.Text: https://listudy.org/ is working
Answers.UserDisplayName: djnavas
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-04-27T13:33:17.967Z
Answers.LastActivityDate: 2024-07-03T12:04:00.437Z
Answers.LastEditDate: 2024-07-03T12:04:00.437Z
Answers.UserDisplayName: SecretAgentMan
Answers.Body: <p>There is already an offline program which has a lot of my ideas implemented:</p>
  <p><a href="http://www.chesspositiontrainer.com/index.php/en/features" rel="noreferrer">http://www.chesspositiontrainer.com/index.php/en/features</a></p>
  <p>But there is no good online tool which comes even close to that, let alone surpassing the linked offline tool. And I think an online tool, which stores the individual repertoire databases on a serve, would be much better, because then you could use the tool from any device, PC, tablet or smartphone. And if professionally made the online tool could easily surpass the offline tool linked above.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-04-25T19:02:26.247Z
Answers.LastActivityDate: 2021-04-25T19:02:26.247Z
Answers.UserDisplayName: Abid
Answers.Body: <p>I was looking for the exact same thing and could not find what I wanted so I ended up building this free tool <a href="http://mychessnotebook.com" rel="nofollow noreferrer">mychessnotebook.com</a> ! It is a text editor which will automatically replace FEN formulas with pictures representing the chessboard (upon PDF export).</p>
  <p><a href="https://i.sstatic.net/mbntG.gif" rel="nofollow noreferrer"><img src="https://i.sstatic.net/mbntG.gif" alt="demo" /></a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-06-30T16:22:21.430Z
Answers.LastActivityDate: 2022-07-03T20:28:11.937Z
Answers.LastEditDate: 2022-07-03T20:28:11.937Z
Answers.UserDisplayName: RUser4512
Answers.Body: <p><a href="https://www.chess.com/openings" rel="noreferrer">https://www.chess.com/openings</a></p>
  <p>This opening explorer is so incredibly comprehensive and intuitive that I cannot imagine anything better. Just make sure you use the website, not the mobile app. The app is trash. The website is better optimized for mobile than the mobile app.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-06-25T07:52:03.133Z
Answers.Text: As an experiment, I inverted the the letters that accounts what pieces are in every row, obtaining the position from black point of view.
Answers.UserDisplayName: djnavas
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-04-27T10:44:19.193Z
Answers.LastActivityDate: 2021-04-27T10:44:19.193Z
Answers.UserDisplayName: David Blackburn
Answers.Body: <p>You may have a look at <a href="https://chess-repertoire-companion.com" rel="nofollow noreferrer">https://chess-repertoire-companion.com</a></p>
  <p>It is free, online and still under development. You can use it from all your devices.</p>
  <p><a href="https://i.sstatic.net/HLGmM.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/HLGmM.jpg" alt="enter image description here" /></a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-03-25T19:17:29.693Z
Answers.Text: I think this is a great initiative!
  
  The only problem I see is that it doesn't recognize transpositions. For example, 1. e4 d6 2. d4 Nf6 3. Nf3 is correctly identified as the Roscher gambit from the Pirc, but the moves 1. e4 d6 2. Nf3 Nf6 3. d4 which leads to the exact same position is not identified as such. 
  
  Hope you will overcome this.
Answers.UserDisplayName: Chameera Dedduwage
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-02-05T21:52:12.717Z
Answers.LastActivityDate: 2023-02-11T14:03:51.250Z
Answers.LastEditDate: 2023-02-11T14:03:51.250Z
Answers.UserDisplayName: Und3
Answers.Body: <p>Personally, I use the following, hanging pawns is the best YouTube channel I've ever come across, I like Chess.com's exercises, simplychess can get a bit wordy, but I find they do a great job of explaining the high level plan, and I like pinsandgambits' short to the point walkthroughs</p>
  <ol>
  <li><a href="https://simplifychess.com/homepage/openings.html" rel="nofollow noreferrer">https://simplifychess.com/homepage/openings.html</a></li>
  <li><a href="https://pinsandgambits.com/" rel="nofollow noreferrer">https://pinsandgambits.com/</a></li>
  <li><a href="https://www.youtube.com/@HangingPawns" rel="nofollow noreferrer">https://www.youtube.com/@HangingPawns</a></li>
  <li><a href="https://www.chess.com/openings" rel="nofollow noreferrer">https://www.chess.com/openings</a></li>
  </ol>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-06-25T14:24:47.967Z
Answers.LastActivityDate: 2024-06-25T14:24:47.967Z
Answers.UserDisplayName: Paweł
Answers.Body: <p>maybe <a href="https://openings101.org" rel="nofollow noreferrer">openings101.org</a> is what you are looking for.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2023-07-30T12:10:36.033Z
Answers.LastActivityDate: 2023-07-30T12:10:36.033Z
Answers.UserDisplayName: St4s
Body: <p>Is there a free online chess repertoire tool? It can be some place where you register, save variations and comments, and navigate with a board what you do. I was used to <em>chessply</em>, but apparently it disappeared.</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2021-04-25T21:39:07.297Z
Comments.Text: https://lichess.org/study
Comments.UserDisplayName: B.Swan
Tags: <opening><software><repertoire>
Title: Is there a free online chess repertoire tool?
ThreadText: # Is there a free online chess repertoire tool?
  
  (Asked by: username_0 on 2021-04-25)
  
  Is there a free online chess repertoire tool? It can be some place where you register, save variations and comments, and navigate with a board what you do. I was used to *chessply*, but apparently it disappeared.
  
  **Tags:** opening, software, repertoire
  
  > **Comments:**
  > **username_1**: https://lichess.org/study  
  
  ---
  
  ## 7 answers
  
  ### Answer by username_2 on 2021-04-27. Score: 13
  
  In addition to the other answers, there are a few sites to consider. These include annotation and comment features as mentioned by the OP.
  
  [**Listudy.org**](https://listudy.org)  
  Upload a PGN and then you play the computer interactively. You play moves from your repertoire and the computer plays the opponent moves. This is also open source.
  
  [**ChessTempo.com**](https://chesstempo.com/)  
  Similar functionality in the "Opening Trainer." The interface is a bit different but it tracks what lines you have learned a bit differently which is nice. Users have access to several settings to accommodate learning training preferences. [Nils Lindemann's](https://chess.stackexchange.com/users/15049/nils-lindemann) [comment](https://chess.stackexchange.com/questions/34896/is-there-a-free-online-chess-repertoire-tool/34913#comment74556_34913) provides [userscripts](https://old.chesstempo.com/chess-forum/site_feedback/sort_openings_by_alphabet-t11784.0.html) that may further improve the opening trainer.
  
  [**lichess.org**](https://lichess.org/study)  
  As [username_1](https://chess.stackexchange.com/users/15478/b-swan) has pointed out in a [comment](https://chess.stackexchange.com/questions/34896/is-there-a-free-online-chess-repertoire-tool#comment56845_34896), the Study feature includes this. Further, [username_3](https://chess.stackexchange.com/users/27380/hauptideal) points out in a [comment](https://chess.stackexchange.com/questions/34896/is-there-a-free-online-chess-repertoire-tool/34913?noredirect=1#comment65041_34913) you can use the Analysis feature's book icon to access master statistics, lichess statistics, and statistics of any lichess account you want.
  
  ---
  
  There are also other related sites worth exploring to understand their capabilities and how they may supplement the resources above.
  
  [**ChessTree.com**](http://www.chesstree.net/)  
  Import/export PGNs. Search databases, get statistics. See opening relationships in a graphical tree.
  
  [**OpeningTree.com**](https://www.openingtree.com/)  
  Import/export PGNs. Import and analyze a user's openings from a database, PGN, etc, including popular online chess sites.
  
  > **Comments:**
  > **username_3**: The opening tree functionality was added natively to lichess for own lichess games  
  > **username_2**: @username_3 thanks, I'll look into it and update the answer accordingly once I've tested its functionality relative to the OP's question.  Appreciate the tip!  
  > **username_2**: @username_3 do you have a link to what you're referring to?  
  > **username_3**: https://lichess.org/analysis Click on the book icon and select player. You'll get master statistics, lichess statistics and statistics of any lichess account you want.  
  > **username_2**: @username_3 Ah. Thanks. I know about that.  I was hoping you meant something more.  Thanks again.  
  > **username_4**: https://listudy.org/ is working  
  
  ---
  
  ### Answer by username_5 on 2021-04-25. Score: 7
  
  There is already an offline program which has a lot of my ideas implemented:
  
  <http://www.chesspositiontrainer.com/index.php/en/features>
  
  But there is no good online tool which comes even close to that, let alone surpassing the linked offline tool. And I think an online tool, which stores the individual repertoire databases on a serve, would be much better, because then you could use the tool from any device, PC, tablet or smartphone. And if professionally made the online tool could easily surpass the offline tool linked above.
  
  
  ---
  
  ### Answer by username_6 on 2022-06-30. Score: 6
  
  I was looking for the exact same thing and could not find what I wanted so I ended up building this free tool [mychessnotebook.com](http://mychessnotebook.com) ! It is a text editor which will automatically replace FEN formulas with pictures representing the chessboard (upon PDF export).
  
  [![demo](https://i.sstatic.net/mbntG.gif)](https://i.sstatic.net/mbntG.gif)
  
  
  ---
  
  ### Answer by username_7 on 2021-04-27. Score: 5
  
  <https://www.chess.com/openings>
  
  This opening explorer is so incredibly comprehensive and intuitive that I cannot imagine anything better. Just make sure you use the website, not the mobile app. The app is trash. The website is better optimized for mobile than the mobile app.
  
  > **Comments:**
  > **username_4**: As an experiment, I inverted the the letters that accounts what pieces are in every row, obtaining the position from black point of view.  
  
  ---
  
  ### Answer by username_8 on 2023-02-05. Score: 4
  
  You may have a look at <https://chess-repertoire-companion.com>
  
  It is free, online and still under development. You can use it from all your devices.
  
  [![enter image description here](https://i.sstatic.net/HLGmM.jpg)](https://i.sstatic.net/HLGmM.jpg)
  
  > **Comments:**
  > **username_9**: I think this is a great initiative!  The only problem I see is that it doesn't recognize transpositions. For example, 1. e4 d6 2. d4 Nf6 3. Nf3 is correctly identified as the Roscher gambit from the Pirc, but the moves 1. e4 d6 2. Nf3 Nf6 3. d4 which leads to the exact same position is not identified as such.   Hope you will overcome this.  
  
  ---
  
  ### Answer by username_10 on 2024-06-25. Score: 0
  
  Personally, I use the following, hanging pawns is the best YouTube channel I've ever come across, I like Chess.com's exercises, simplychess can get a bit wordy, but I find they do a great job of explaining the high level plan, and I like pinsandgambits' short to the point walkthroughs
  
  1. <https://simplifychess.com/homepage/openings.html>
  2. <https://pinsandgambits.com/>
  3. <https://www.youtube.com/@HangingPawns>
  4. <https://www.chess.com/openings>
  
  
  ---
  
  ### Answer by username_11 on 2023-07-30. Score: 0
  
  maybe [openings101.org](https://openings101.org) is what you are looking for.
  
  
  ---
  
  