More about GNS3
Here you can get the info about GNS3 v2.1.16. GNS3 Team has developed this program and provides it at no cost. The software refers to System Utilities, Network, and supports .net formats. The most used versions of this tool that run under Windows 7/8/8.1/10 are 2.1 and 2.0. The most popular installers for GNS3 are gns3.exe and GNS3.Exe.exe.