The JTablet 2.0 SDK is released under the open-source zlib license (below), but is based on the JPen library which uses the LGPL v3 license.
The JTablet 2.0 SDK License applies to the Java source code, Native source code, documentation, and examples. It does not apply to the JTablet website or logo.
/*! * Copyright (c) 2009 Marcello Bastéa-Forte (marcello@cellosoft.com) * * 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. */
Contact me at marcello@cellosoft.com.