user18129: Which is the most popular and crowded chess server? I'm new at computer chess, and want to start playing at servers, but I do not understand where I have to play.
I am hearing about freechess, chessclub, lichess, chess.com.
How do I play in chess servers? Will I use a GUI or will I play directly in the browser. How do the professionals play?
Mention that, I like free and open-source things.

user825: Lichess has everything you need. Free and open source. It's the second or third popular website after chess.com (possibly chess24 not sure). Many strong players. No installation as it’s a web app.

18129: <p>Which is the most popular and crowded chess server? I'm new at computer chess, and want to start playing at servers, but I do not understand where I have to play.</p>

<p>I am hearing about <a href="https://www.freechess.org/" rel="nofollow noreferrer">freechess</a>, <a href="https://www.chessclub.com/" rel="nofollow noreferrer">chessclub</a>, <a href="https://lichess.org" rel="nofollow noreferrer">lichess</a>, <a href="http://chess.com/" rel="nofollow noreferrer">chess.com</a>.</p>

<p>How do I play in chess servers? Will I use a GUI or will I play directly in the browser. How do the professionals play?</p>

<p>Mention that, I like free and open-source things.</p>
 825: <p>Lichess has everything you need. Free and open source. It's the second or third popular website after chess.com (possibly chess24 not sure). Many strong players. No installation as it’s a web app.</p>
