The DWSIM Standalone Thermodynamics Library (DTL) is a 32/64-bit .NET/Mono managed, COM-callable Dynamic Link Library (DLL) that exposes DWSIM’s thermodynamics engine to external applications using a simple programming interface, with no dependency on external components.
DWSIM Standalone Thermodynamics Library is licensed under the GNU Lesser General Public License version 3 (allows linking of the library against proprietary, closed-source applications). Read the license.txt file included in the zip file for more details.
You can download the library for free or donate any amount by inputting the desired donation value in the text box above the download button.
More information: http://dwsim.inforside.com.br/wiki/index.php?title=DTL