The latest GCModeller release is available at github release page.
Please choose your operating system to view the available packages. Source code is available on GitHub.
GCModeller for Windows is available as a Windows Installer file, and GCModeller for Linux/Mac is available at github release which it has a Unix tag
For windows platform, GCModeller only provided 64-bit program (But you can download the source code and compile GCModeller in 32-bit mode in VisualStudio 2017). And running GCModeller required of .NET Framework 4.7 was installed, this will required Windows version of Windows 7 or higher. For running on Windows XP, you can download the latest mono environment.
For Linux/Mac platform, just following the mono installation guides on Linux or Mac.