user5848: I would appreciate if somebody could recommend a good Swiss pairing program. I'd prefer online version with multi-language option and free version but cheap one is also good.
I've found http://www.free-swiss.com/ but do you know other ones?

user4418: My club uses Swiss Manager. It is very good but not cheap. 150 euros for the full version, 75 euros for the light. It is perhaps worth looking at what it does to get ideas if you are thinking of writing your own.
One I downloaded some time ago but still haven't got round to playing (so I can't give any recommendation) is OSwiss which is a project on Sourceforge.

user26882: If you are looking for an easy-to-use, FIDE-approved online platform, take a look at ChessManager.


user2311: An offline alternative is Vegachess, which it is also homologated by FIDE. AFAIK Vegachess just uses javafo as its pairing engine. Linux version of vegachess is free to use and Windows version not very expensive.

user10477: SWIPS is also online tool for managing tournaments. It includes much more than just a swiss system and round robin, but you can use it solely for that purpose if you want.
Right now its free, available languages are English and Slovak.

user17213: You could try this free service: https://swisssystem.org/
It’s simple and easy to use. It works fine on mobile devices. The maximum player count is 200.

5848: <p>I would appreciate if somebody could recommend a good Swiss pairing program. I'd prefer online version with multi-language option and free version but cheap one is also good.</p>

<p>I've found <a href="http://www.free-swiss.com/" rel="nofollow noreferrer">http://www.free-swiss.com/</a> but do you know other ones?</p>
 4418: <p>My club uses <a href="http://swiss-manager.at/" rel="nofollow noreferrer">Swiss Manager</a>. It is very good but not cheap. 150 euros for the full version, 75 euros for the light. It is perhaps worth looking at what it does to get ideas if you are thinking of writing your own.</p>

<p>One I downloaded some time ago but still haven't got round to playing (so I can't give any recommendation) is <a href="http://sourceforge.net/projects/oswiss/" rel="nofollow noreferrer">OSwiss</a> which is a project on Sourceforge.</p>
 26882: <p>If you are looking for an easy-to-use, FIDE-approved online platform, take a look at <a href="https://www.chessmanager.com/en/solutions/software" rel="nofollow noreferrer">ChessManager</a>.</p>
<p><a href="https://i.stack.imgur.com/LN0Sf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LN0Sf.png" alt="enter image description here" /></a></p>
 2311: <p>An offline alternative is <a href="http://www.vegachess.com" rel="noreferrer">Vegachess</a>, which it is also homologated by FIDE. AFAIK Vegachess just uses javafo as its pairing engine. Linux version of vegachess is free to use and Windows version not very expensive.</p>
 10477: <p><a href="https://swips.eu/" rel="noreferrer">SWIPS</a> is also online tool for managing tournaments. It includes much more than just a swiss system and round robin, but you can use it solely for that purpose if you want.</p>

<p>Right now its free, available languages are English and Slovak.</p>
 17213: <p>You could try this free service: <a href="https://swisssystem.org/" rel="noreferrer">https://swisssystem.org/</a></p>

<p>It’s simple and easy to use. It works fine on mobile devices. The maximum player count is 200.</p>
