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The data and information within DWSIM have been obtained from a wide variety of literature sources. While reasonable care has been exercised in the collection of data and testing of this software, the author and contributors of the DWSIM Project disclaims any warranty, expressed or implied, as to the accuracy or reliability of the data or calculations contained therein.

The results of calculations obtained from DWSIM yield approximate results, which will not always be suitable for every application. The software is designed for use by trained professional personnel and is not a substitute for sound professional judgment. It is the sole responsibility of the user to validate the data presented by DWSIM and to determine whether the results of this program are accurate and suitable for any specific purpose. No guarantee of accuracy or fitness for any purpose is expressed or implied.

The author and contributors strongly recommend that the data be checked against other sources and/or methods before use and application. DWSIM's author and its contributors shall not be held liable for any direct, indirect, consequential, or incidental damages incurred through the use of the data or calculations.

Support the Project!

DWSIM has a Patreon page where you can subscribe to donate a fixed, monthly amount and get exclusive rewards in return. The more you donate, the more rewards you'll get.

By becoming a patron, you will support future development of DWSIM while getting access to exclusive support channels and features, including mobile version unlock keys. You can also participate in development polls and drive the path for future features.

Super Supporter Membership (9.90 USD/month)

  • Your name in DWSIM's Splash Screen
  • Direct e-mail support
  • Early access to updates
  • Remote Desktop support sessions
  • Access to exclusive development polls
  • DWSIM Classic + ChemSep for macOS and Linux

Awesome Supporter Membership (29.90 USD/month)

Big Fan Membership (50 USD)

One of the most common reasons people become my Patron is just to say thanks for the content I create. This tier is for Patrons who would like to support my work without selecting benefits. You can also use this tier to make a one-time pledge.



The Plus package is a convenience installer containing DWSIM v6.3 for 64-bit Windows plus all plugins and add-ins for Awesome Supporters.

Free Plugins/Add-ins for Windows/Linux/macOS

Awesome Supporter Exclusive Plugins/Add-ins

Source Code

View Source @ GitHub DWSIM source code is written in VB.NET and C#, which can be compiled with Visual Studio 2017 or newer on Windows, MonoDevelop on Linux and Visual Studio for Mac on macOS.