SmartFoxServer 2X downloads

Community Edition v2.19

SmartFoxServer 2X Community Edition delivers full access to the platform for free and without time limits. It allows 100 concurrent users and provides 100% of the features!

The distribution includes:

• the multiplayer server
• the Administration Tool

The client APIs are not included; they can be downloaded separately here.

When you have finished downloading the main installer please consult our installation guide. Please also read the highlighted notes below.

	SmartFoxServer 2X Windows x86_64 installer	Download Important note on Windows SmartScreen
	SmartFoxServer 2X Linux/Unix x86_64 installer	Download
	SmartFoxServer 2X macOS (10.8+) 64bit universal installer	Download
	Version: 2.19.0 Release date: Jan 19th, 2023 Read the release notes

The Community Edition can be used in both non-profit and commercial projects provided that you show a readable "Powered by SmartFoxServer" notice in your main screen or application GUI. The official logo is available in the Extras section of this page.

In case of minor updates and additions to the server or its components after the main package release, a separate download link is provided in the Updates section of this page.

Updating the Client API to the latest version is recommended to take full advantage of the new features of SFS2X.

Latest server update

This patch upgrades SmartFoxServer 2X to the latest version made available after v2.19 full installer was released. DO NOT INSTALL if you are still using a version of SmartFoxServer prior to v2.19 (see below instead).

The patch is distributed as a compressed file (.zip): uncompress it in the SmartFoxServer 2X installation folder and open the RELEASE-NOTES/Release-Notes.html file for installation instructions.

Previous releases

The installers below upgrade each specific SmartFoxServer 2X version to the latest applicable patch after the release of the respective full installer. Make sure to match the required version before installing.

The patches are distributed as a compressed files (.zip): uncompress the patch in the SmartFoxServer 2X installation folder and open the RELEASE-NOTES/Release-Notes.html file for installation instructions.

Official client API

The following list contains the links to download the latest versions of the official client APIs, developed and maintained by our team.
Setup instructions are available in the online documentation.

C# API		Download
Version: 1.8.5 Release date: Sep 30th, 2025 Requires: .NET 4.x | SmartFoxServer 2X v2.13 or later Read the release notes NOTE: if you still need .NET 2.0 compatibility, you can download API v1.7.8.1.
JavaScript API w/ binary protocol		Download
Version: 1.8.6 Release date: Feb 16th, 2026 Requires: SmartFoxServer 2X v2.13 or later Read the release notes NOTE: this API is also available as an npm package. IMPORTANT: if you have an existing project running on SmartFoxServer 2X v2.12 or previous, please read this document before migrating to a newer version of SFS2X and this API
Java API		Download
Version: 1.8.4 Release date: Jun 20th, 2025 Requires: SmartFoxServer 2X v2.0.1 or later Recommended: SmartFoxServer 2X v2.12 or later Read the release notes
Objective-C API		Download
Version: 1.7.16 Release date: Nov 10th, 2025 Requires: SmartFoxServer 2X v2.12.0 or later Recommended: SmartFoxServer 2X v2.13 or later Read the release notes
ActionScript 3 API		Download
Version: 1.8.0 Release date: Sep 29th, 2025 Requires: SmartFoxServer 2X v2.0.1 or later Recommended: SmartFoxServer 2X v2.12 or later Read the release notes

Experimental client API

The following list contains the links to other client APIs developed by our team, but for which we can only offer limited support only.

C++ API		Download
Version: 1.7.5 Release date: Apr 3rd, 2018 Requires: SmartFoxServer 2X v2.0.1 or later Recommended: SmartFoxServer 2X v2.10 or later Read the release notes

Unofficial client API

The following list contains the links to other client APIs developed and maintained by third parties. Please note that we don't provide direct support on these APIs, so please contact the developers directly (where possible).

Haxe API by DigiEggz		GitHub
Fork of the original porting of ActionScript 3 API by Vincent Blanchet: added WebSocket support and protocol encryption + other improvements
Haxe API by Barış Çağrı Yıldırım (barisyild)		GitHub
Fork of the original porting of ActionScript 3 API by Vincent Blanchet: added WebSocket support

Examples

The following packs provide the source code of all examples referenced in the SmartFoxServer 2X documentation. They range from simple applications showcasing a specific feature to fully featured multiplayer games.

Unity examples pack		Download
Version: 3.0.0 Release date: Jun 6th, 2025 Requires: Unity 6+ Read the release notes Read the documentation NOTE: if you still need Unity 2021→2023 compatibility, download Unity examples pack v2.1.
Godot examples pack		Download
Version: 1.1.0 Release date: Jan 9th, 2024 Requires: Godot Mono 4.x Read the release notes Read the documentation
HTML5 examples pack w/ binary protocol API		Download
Version: 1.7.2 Release date: Jul 21st, 2020 Read the release notes NOTE: 1) under Internet Explorer 11, when running the examples by double clicking their html file, the browser may show an alert preventing the JavaScript code to be executed - you can allow the blocked content as it does no harm; 2) due to local content loading, the Tris and Simple MMO World examples don't work properly if their html file is loaded by double clicking it. Both issues do not occur if the examples are deployed to a web server.
Java / Android examples pack		Download
Version: 2.0.0 Release date: Feb 23rd, 2021 Read the release notes Read the documentation
iOS examples pack		Download
Version: 1.2.0b Release date: Feb 23rd, 2021 Read the release notes Read the documentation
Flash examples pack		Download
Version: 1.3.0 Release date: Nov 14th, 2013 Read the release notes Read the documentation
Windows 8 / Phone 8 examples pack		Download
Version: 1.0.0 Release date: Sep 24th, 2013 Read the release notes
C++ examples pack		Download
Version: 1.4.0 Release date: Apr 19th, 2017 Read the release notes Read the documentation
Unreal Engine proof of concept		Download
Version: 1.0.0 Release date: Jun 30th, 2015 This package contains a modified version of one of the examples provided with Unreal Engine 4. It is an experimental proof of concept showing how to integrate the SmartFoxServer 2X C++ API, connect to the server and exchange public messages. A specific tutorial (also contained in the zip) provides in depth instructions on how to setup your Unreal project and interact with SmartFoxServer 2X.

Extras

Additional components for SmartFoxServer 2X and other assets.

Legacy Tools

Tools still available for compatibility with older SmartFoxServer 2X versions.

	AdminTool for macOS (standalone)	Download
	AdminTool for Windows (standalone)	Download
	Version: 2.2.0 Release date: Dec 9th, 2019 Compatible with: SFS2X v2.12 > v2.17 Read the release notes Read the documentation
The Windows installer is not yet signed; when launching it, you will be warned that the program is from an unknown publisher. If you trust us, go ahead; otherwise you can keep using the web-based (Flash) version of the AdminTool distributed with SmartFoxServer. In particular, Windows 10 will show the blue box shown below, preventing the installer launch. Click on the More info link to make the Run anyway button appear.
Migration Tool (all operating systems)		Download
Version: 1.0.0 Release date: Sep 26th, 2017 Compatible with: SFS2X v2.11 > v2.13 Read the release notes Read the documentation
RedBox add-on for audio/video streaming		Download
Version: 1.0.2 Release date: Sep 24th, 2014 Read the release notes Read the documentation