The PACOS software is free and open source. To download PACOS, please fill in the form below. An email will immediately be sent to your email account. It contains a link to download the PACOS system, with all source code.

If you are at HKUST, click here and simply want to use the PACOS system, you don't need to fill in this form. Instead, go to the UST installation of PACOS here and log in. If you can't log in and you are sure you are entering your details correctly then email Oz Lam <> to get your name added to the HKUST PACOS system, so you can log in.

I want to download the latest version of PACOS right now
I want to receive announcement email about any future updates of PACOS

There are several reasons for requesting this information.

The email address will be used solely for the PACOS project.