Downloading GCN 2.9.1 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The program's installer is commonly called GCN.exe or kil.exe etc.
GCN lies within Communication Tools, more precisely Instant messaging. This free software is a product of Global Communications Network, LLC. We recommend checking the downloaded files with any free antivirus. You can execute this free PC program on Windows XP/7/8/10/11 32-bit. The following versions: 2.9 and 2.8 are the most frequently downloaded ones by the program users.
From the developer:
GCN is an all-in-one communication platform designed for chat and email sending.
You may want to check out more software, such as Wii U GCN USB Driver, which might be related to GCN.