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List of free and open source chess applications

This is a list of chess applications that I personally use and recommend.

It was posted in reddit www.reddit.com/r/chess/comments/cdjd59/list_of_free_and_open_source_chess_applications/ but it was removed and ornicar commented that it was ok to repost it here, so here it is!

You can check the blog post http://vitomd.com/blog/chess/free-online-chess-apps/ if you want to see some screenshots.

Disclamer: The first 2 were created by me.

The list:
- http://chesstacticsgenerator.vitomd.com/ Generate chess tactics from your own lichess games. By vitomd
- http://vitomd.com/chess-winning-or-blunder/ Answer if it's the best move or a blunder, from your own games. By vitomd
- tailuge.github.io/mistake-o-tron/index.html find mistakes from your lichess games. By tailuge
- tailuge.github.io/chess-o-tron/public/openings/openingtree.html Watch your opening tree from your lichess games. By tailuge
- tailuge.github.io/chess-o-tron/ A lot of chess experiments. By tailuge
- blitztactics.com/ open source puzzle rush and tactics. By linrock
- hxim.github.io/Stockfish-Evaluation-Guide/ Investigate each part of Stockfish static evaluation function. By hxim
- hxim.github.io/PeshkaChess/index.html Great online chess analysis tool, import pgn , my favorite feature is the static evaluation of positions features (the little s on top). By hxim
- listudy.org/ Import pgn or lichess studies and use spaced repetition to learn. By ArneVogel
- http://www.studyopenings.com/ Build your repertoire. By jven
- hookdump.github.io/chessy/ Knight jumps visualization. By hookdump
- lichess.org Maybe you know this one. The free and open source chess server by ornicar

If you know more online free and open source applications please share!
Thanks a lot :). It's a shame that it was removed from Reddit.

I think Scid is open source as well.

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