JSFML is available under the same license terms as is SFML itself.
The JSFML library is free for any use, including commercial and closed source products.
A mention in the product credits would be appreciated, but is by no means mandantory.
The source code is licensed under the zlib/png license:
JSFML - Copyright (c) 2011-2013 Patrick Dinklage This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution.
The following libraries are distributed along with JSFML in binary form, for the reasons of convenience and/or higher stability:
- SFML 2.0, provided under the zlib/png license
- GLEW 1.6, provided under various open source compatible licenses
- libjpeg v8d, provided royalty-free by the Independent JPEG Group
- OpenAL-Soft, provided under the GNU Lesser General Public License
- libsndfile 1.0.24, provided under the GNU Lesser General Public License