Vision Network Analysis is described as 'program for the planning, design and management of electricity networks. The package can very easily carry out load flow and short-circuit calculations as well as fault and reliability analyzes'. There are five alternatives to Vision Network Analysis for Windows, Online / Web-based and iPhone. The best alternative is NEPLAN Electricity. It's not free, so if you're looking for a free alternative, you could try DOC. Other great apps like Vision Network Analysis are PowerFactory (Paid), ETAP (Paid) and PSS/E (Paid).
DOC is a software dedicated to the design and calculation of single-line diagrams of electrical systems in low and medium voltage, allowing the user to choose switching devices and security, and for verification and coordination of protective devices.