Johannes (in honor of the Nobel Prize in Physics Johannes van der Waals) is an online social platform for researchers who will share experimental data of fluids, submitted via the web and through a public interface (API) that can connect other software, which GPEC will use for computations.

Users can not only consume the data presented in a useful manner (eg, in different tables exportable formats), but also provide new "data sets" and facilitate communication and contact between researchers with interests.