I need a feasibility study for my startup and I heard that COMFAR (Computer Model for Feasibility Analysis and Reporting) is suitable. COMFAR facilitates short and long-term analysis of financial and economic consequences for industrial and non-industrial projects.

COMFAR seems outdated, and would prefer something suitable for Linux. Can anybody recommend an alternative? Linux-based, free and open-source is preferred, but other models and alternative implementations might be suitable.