Before SoftEther went open source, it was sold commercially as early as 2004. It was renamed PacketIX VPN around 2005 and is still sold commercially under that

Before SoftEther went open source, it was sold commercially as early as 2004. It was renamed PacketIX VPN around 2005 and is still sold commercially under that product name at https://www.softether.jp/1-product/11-vpn https://www.softether.jp/1-product/11-vpn (it's up to v4.0). I remember reading that there was a 10-year agreement that finally ended at the start of 2014, allowing the original developer to go open source. The source tree is different from PacketIX's though, so some of the features are still not available yet in the open source version.