SFML is a simple, fast, cross-platform and object-oriented multimedia API. It provides access to windowing, graphics, audio and network. It is written in C++, and has bindings for various languages such as C, .Net, Ruby, Python.
SFML is currently in an interesting state of development, which can quickly become confusing if you aren't following it closely. As such we want to clarify where to get which version.
- The [`master`](https://github.com/SFML/SFML/tree/master) branch contains work in progress for the next major version SFML 3. As such it's considered unstable, but any testing and feedback is highly appreciated.
- The [`2.6.x`](https://github.com/SFML/SFML/tree/2.6.x) branch is the nearly complete next minor version SFML 2.6, which should be very stable, even if it hasn't been officially released yet.
- The [`2.5.1`](https://github.com/SFML/SFML/tree/2.5.1) tag is the last official SFML release, but it lacks a lot of fixes and features that can already be found on the `2.6.x` branch.
SFML is an open-source project, and it needs your help to go on growing and improving. If you want to get involved and suggest some additional features, file a bug report or submit a patch, please have a look at the [contribution guidelines](https://www.sfml-dev.org/contribute.php).
The SFML libraries and source code are distributed under the [zlib/libpng license](https://opensource.org/licenses/Zlib). See [license.md](license.md). External libraries used by SFML are distributed under their own licenses.
In short, SFML is free for any use (commercial or personal, proprietary or open-source). You can use SFML in your project without any restriction. You can even omit to mention that you use SFML -- although it would be appreciated.
- [_OpenAL-Soft_](https://github.com/kcat/openal-soft) is under the [LGPL license](https://github.com/kcat/openal-soft/blob/master/COPYING)
- [_stb_image_ and _stb_image_write_](https://github.com/nothings/stb) are [public domain](https://github.com/nothings/stb/blob/master/LICENSE)
- [_freetype_](https://gitlab.freedesktop.org/freetype/freetype) is under the [FreeType license or the GPL license](https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/LICENSE.TXT)
- [_libogg_](https://gitlab.xiph.org/xiph/ogg) is under the [BSD license](https://gitlab.xiph.org/xiph/ogg/-/blob/master/COPYING)
- [_libvorbis_](https://gitlab.xiph.org/xiph/vorbis) is under the [BSD license](https://gitlab.xiph.org/xiph/vorbis/-/blob/master/COPYING)
- [_libflac_](https://gitlab.xiph.org/xiph/flac) is under the [BSD license](https://gitlab.xiph.org/xiph/flac/-/blob/master/COPYING.Xiph)
- [_minimp3_](https://github.com/lieff/minimp3) is under the [CC0 license](https://github.com/lieff/minimp3/blob/master/LICENSE)