EBSILONProfessional is described as 'EBSILON®Professional is a system that simulates thermodynamic cycle processes and is used for engineering, designing, and optimizing plants'. There are five alternatives to EBSILONProfessional for Windows, Linux and Mac. The best alternative is Engineering Equation Solver. It's not free, so if you're looking for a free alternative, you could try engineeringsuite. Other great apps like EBSILONProfessional are Aspen Plus (Paid), TRNSYS (Paid) and GateCycle Software (Paid).
Aspen Plus is a market-leading process modeling environment for conceptual design, optimization, and performance monitoring for the chemical, polymer, specialty chemical, metals and minerals, and coal power industries.
TRNSYS is a transient systems simulation program with a modular structure. It recognizes a system description language in which the user specifies the components that constitute the system and the manner in which they are connected.
GateCycle plant performance monitoring software predicts design and off-design performance of combined cycle plants, fossil boiler plants, nuclear power plants, cogeneration systems, combined heat-and-power plants, advanced gas turbine cycles and many other energy systems.
Program that solves numerically algebraic systems of non-linear, and linear, equations. It also includes a database of thermodynamical properties for many substances and a symbolic mathematical program to perform mathematical operations.